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| | | Author: | SylvainLS  | | Posted: | Nov 9, 2022 11:44 | | Subject: | [Joke] Building with/without a plan | | Viewed: | 107 times | | Topic: | Off Topic | |
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| It’s been a while since I told a joke here and a thread about building reminded
me of this one.
It’s banter between Grandes Écoles (specialised universities) in France, and
particularly Engineering ones.
Context to understand the joke:
— l’X = École polytechnique. Brainy (and military, which is a bit of a contradiction).
A few Nobel prizes and a Field medal, three Presidents of France, and many CEOs
of big French companies.
— Centrale = a group of Engineering schools. Good… but not X.
— Arts & Métiers. More hands-on. Alumni are called ‘gadzarts’ (pronounced gah
dzahr; from ‘gars des Arts’ (gah days_ahr) / guys from Arts).
(Not an alumnus of any.)
So, here’s the joke:
What’s the difference between an X, a centralien, and a gadzart?
— When an X builds a bridge, the bridge falls down. But they know why the bridge
fell down.
— When a centralien builds a bridge, the bridge falls down, they don’t know why.
— When a gadzart builds a bridge, the brigde holds, they don’t know why but it
holds!
Does this apply to LEGO building? What kind of LEGO engineer are you?
Me, of course, I think I’m a unicorn: I’ll build the bridge, and the brigde will
hold, and I’ll know why, haha! …until I actually have to build the bridge! 
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| | | | | Author: | maxx3001 | | Posted: | Nov 9, 2022 11:54 | | Subject: | Re: [Joke] Building with/without a plan | | Viewed: | 23 times | | Topic: | Off Topic | |
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| In Off Topic, SylvainLS writes:
| | It’s been a while since I told a joke here and a thread about building reminded
me of this one.
It’s banter between Grandes Écoles (specialised universities) in France, and
particularly Engineering ones.
Context to understand the joke:
— l’X = École polytechnique. Brainy (and military, which is a bit of a contradiction).
A few Nobel prizes and a Field medal, three Presidents of France, and many CEOs
of big French companies.
— Centrale = a group of Engineering schools. Good… but not X.
— Arts & Métiers. More hands-on. Alumni are called ‘gadzarts’ (pronounced gah
dzahr; from ‘gars des Arts’ (gah days_ahr) / guys from Arts).
(Not an alumnus of any.)
So, here’s the joke:
What’s the difference between an X, a centralien, and a gadzart?
— When an X builds a bridge, the bridge falls down. But they know why the bridge
fell down.
— When a centralien builds a bridge, the bridge falls down, they don’t know why.
— When a gadzart builds a bridge, the brigde holds, they don’t know why but it
holds!
Does this apply to LEGO building? What kind of LEGO engineer are you?
Me, of course, I think I’m a unicorn: I’ll build the bridge, and the brigde will
hold, and I’ll know why, haha! …until I actually have to build the bridge!
|
Yup, same over here, I can build lots of things and they will hold, but I have
only my experience in building, no idea why it holds
Centrale cannot build or account for their failure to build.
At least X knows why they fail
I build stuff like this, but also chairs and tables, everything but the
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| | | | | | | Author: | SylvainLS | | Posted: | Nov 9, 2022 12:12 | | Subject: | Re: [Joke] Building with/without a plan | | Viewed: | 17 times | | Topic: | Off Topic | |
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| In Off Topic, maxx3001 writes:
| | […]
Yup, same over here, I can build lots of things and they will hold, but I have
only my experience in building, no idea why it holds
|
| | Centrale cannot build or account for their failure to build.
At least X knows why they fail
|
X know a lot of things and they think they know even more 
| | I build stuff like this, but also chairs and tables, everything but the
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Wow 
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| | | | | | | Author: | WoutR | | Posted: | Nov 9, 2022 14:52 | | Subject: | Re: [Joke] Building with/without a plan | | Viewed: | 16 times | | Topic: | Off Topic | |
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| In Off Topic, maxx3001 writes:
| | In Off Topic, SylvainLS writes:
| | It’s been a while since I told a joke here and a thread about building reminded
me of this one.
It’s banter between Grandes Écoles (specialised universities) in France, and
particularly Engineering ones.
Context to understand the joke:
— l’X = École polytechnique. Brainy (and military, which is a bit of a contradiction).
A few Nobel prizes and a Field medal, three Presidents of France, and many CEOs
of big French companies.
— Centrale = a group of Engineering schools. Good… but not X.
— Arts & Métiers. More hands-on. Alumni are called ‘gadzarts’ (pronounced gah
dzahr; from ‘gars des Arts’ (gah days_ahr) / guys from Arts).
(Not an alumnus of any.)
So, here’s the joke:
What’s the difference between an X, a centralien, and a gadzart?
— When an X builds a bridge, the bridge falls down. But they know why the bridge
fell down.
— When a centralien builds a bridge, the bridge falls down, they don’t know why.
— When a gadzart builds a bridge, the brigde holds, they don’t know why but it
holds!
Does this apply to LEGO building? What kind of LEGO engineer are you?
Me, of course, I think I’m a unicorn: I’ll build the bridge, and the brigde will
hold, and I’ll know why, haha! …until I actually have to build the bridge!
|
Yup, same over here, I can build lots of things and they will hold, but I have
only my experience in building, no idea why it holds
|
Probably a combination of
1) lots and lots of nails and screws.
2) duct tape
3) possibly a bit of magic
4) LEGO construction experience
If it does not hold, add more.
| |
Centrale cannot build or account for their failure to build.
At least X knows why they fail
I build stuff like this, but also chairs and tables, everything but the
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| | | | | Author: | yorbrick | | Posted: | Nov 9, 2022 11:54 | | Subject: | Re: [Joke] Building with/without a plan | | Viewed: | 22 times | | Topic: | Off Topic | |
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| | | Does this apply to LEGO building? What kind of LEGO engineer are you?
Me, of course, I think I’m a unicorn: I’ll build the bridge, and the brigde will
hold, and I’ll know why, haha! …until I actually have to build the bridge!
|
Well if you build a bridge in stud.io, it won't fall down. Maybe there should
be a gravity setting to show what happens if you made it in real life.
If I build a bridge it would tend to be very stable, mainly because I spend so
much time (and parts) on the groundworks that I run out of parts by the time
I get to the boring bridge.
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| | | | | | | Author: | SylvainLS | | Posted: | Nov 9, 2022 12:10 | | Subject: | Re: [Joke] Building with/without a plan | | Viewed: | 21 times | | Topic: | Off Topic | |
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| In Off Topic, yorbrick writes:
| | | | Does this apply to LEGO building? What kind of LEGO engineer are you?
Me, of course, I think I’m a unicorn: I’ll build the bridge, and the brigde will
hold, and I’ll know why, haha! …until I actually have to build the bridge!
|
Well if you build a bridge in stud.io, it won't fall down. Maybe there should
be a gravity setting to show what happens if you made it in real life.
|
There’s a Stability check: https://studiohelp.bricklink.com/hc/en-us/articles/6501498505111-Stability-check
Parts don’t fall but it tells you if it thinks the base is too small (it draws
an ellipsis at the base, green = okay, red = won’t stand) / parts are not connected
(you have multiple ellipses).
| | If I build a bridge it would tend to be very stable, mainly because I spend so
much time (and parts) on the groundworks that I run out of parts by the time
I get to the boring bridge.
|
Yeah, I tend to over-engineer things sometimes… and fill gaps that don’t need
to be filled and smooth surfaces too much and then end up with big lumps instead
of works of art and need to start over
BTW, Gustave Eiffel went to Centrale… but his bridges still hold.
(The Tower was trimed down though: there were too many beams that were not useful
and made it
too heavy.)
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| | | | | | | Author: | peregrinator | | Posted: | Nov 9, 2022 12:46 | | Subject: | Re: [Joke] Building with/without a plan | | Viewed: | 21 times | | Topic: | Off Topic | |
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| In Off Topic, yorbrick writes:
| | | | Does this apply to LEGO building? What kind of LEGO engineer are you?
Me, of course, I think I’m a unicorn: I’ll build the bridge, and the brigde will
hold, and I’ll know why, haha! …until I actually have to build the bridge!
|
Well if you build a bridge in stud.io, it won't fall down. Maybe there should
be a gravity setting to show what happens if you made it in real life.
If I build a bridge it would tend to be very stable, mainly because I spend so
much time (and parts) on the groundworks that I run out of parts by the time
I get to the boring bridge.
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| | | | | | | | | Author: | 1001bricks | | Posted: | Nov 9, 2022 12:53 | | Subject: | Re: [Joke] Building with/without a plan | | Viewed: | 21 times | | Topic: | Off Topic | |
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| | Oh that must be the famous Marshmallow Bridge! |
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| | | | | | | | | Author: | WoutR | | Posted: | Nov 9, 2022 14:53 | | Subject: | Re: [Joke] Building with/without a plan | | Viewed: | 17 times | | Topic: | Off Topic | |
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| In Off Topic, peregrinator writes:
| | In Off Topic, yorbrick writes:
| | | | Does this apply to LEGO building? What kind of LEGO engineer are you?
Me, of course, I think I’m a unicorn: I’ll build the bridge, and the brigde will
hold, and I’ll know why, haha! …until I actually have to build the bridge!
|
Well if you build a bridge in stud.io, it won't fall down. Maybe there should
be a gravity setting to show what happens if you made it in real life.
If I build a bridge it would tend to be very stable, mainly because I spend so
much time (and parts) on the groundworks that I run out of parts by the time
I get to the boring bridge.
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Simple solution to that resonance problem: change the wind speed.
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| | | | | | | | | | | Author: | WoutR | | Posted: | Nov 9, 2022 14:56 | | Subject: | Re: [Joke] Building with/without a plan | | Viewed: | 14 times | | Topic: | Off Topic | |
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| In Off Topic, WoutR writes:
| | In Off Topic, peregrinator writes:
| | In Off Topic, yorbrick writes:
| | | | Does this apply to LEGO building? What kind of LEGO engineer are you?
Me, of course, I think I’m a unicorn: I’ll build the bridge, and the brigde will
hold, and I’ll know why, haha! …until I actually have to build the bridge!
|
Well if you build a bridge in stud.io, it won't fall down. Maybe there should
be a gravity setting to show what happens if you made it in real life.
If I build a bridge it would tend to be very stable, mainly because I spend so
much time (and parts) on the groundworks that I run out of parts by the time
I get to the boring bridge.
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|
Simple solution to that resonance problem: change the wind speed.
|
Or, even better, write in the specification that the bridge is not supposed to
exist at this specific wind speed, and blame the customer if it goes wrong.
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| | | | | | | | | | | | | Author: | SylvainLS | | Posted: | Nov 9, 2022 14:59 | | Subject: | Re: [Joke] Building with/without a plan | | Viewed: | 14 times | | Topic: | Off Topic | |
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| In Off Topic, WoutR writes:
| | […]
| | Simple solution to that resonance problem: change the wind speed.
|
Or, even better, write in the specification that the bridge is not supposed to
exist at this specific wind speed, and blame the customer if it goes wrong.
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Have you been exposed to a bit too many Apple products?
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| | | | | | | | | | | | | | | Author: | 1001bricks | | Posted: | Nov 9, 2022 15:36 | | Subject: | Re: [Joke] Building with/without a plan | | Viewed: | 15 times | | Topic: | Off Topic | |
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| In Off Topic, SylvainLS writes:
| | In Off Topic, WoutR writes:
| | […]
| | Simple solution to that resonance problem: change the wind speed.
|
Or, even better, write in the specification that the bridge is not supposed to
exist at this specific wind speed, and blame the customer if it goes wrong.
|
Have you been exposed to a bit too many Apple products?
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Ah, you cannot repair the brigde, I see...
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| | | | | Author: | Nubs_Select | | Posted: | Nov 9, 2022 12:19 | | Subject: | Re: [Joke] Building with/without a plan | | Viewed: | 21 times | | Topic: | Off Topic | |
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| And then you have people like my dad who fit in several spots
He is super confident in everything he builds and knows how it works but no one
else can figure out how it hasn’t fallen over. For example my dad helped me build
the stand that my drawer units go on (like 95+ 64 drawer units) none of them
are touching the ground and are built on a free standing stand since my dad didn’t
want to put and holes in the walls and with the touch of a finger it can sway
noticeably but even bumping into and everything it hasn’t fallen (only
like 8 contact points on the ground since we forgot several of them)
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| | | | | | | Author: | SylvainLS | | Posted: | Nov 9, 2022 12:24 | | Subject: | Re: [Joke] Building with/without a plan | | Viewed: | 21 times | | Topic: | Off Topic | |
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| In Off Topic, Nubs_Select writes:
| | And then you have people like my dad who fit in several spots
He is super confident in everything he builds and knows how it works but no one
else can figure out how it hasn’t fallen over. For example my dad helped me build
the stand that my drawer units go on (like 95+ 64 drawer units) none of them
are touching the ground and are built on a free standing stand since my dad didn’t
want to put and holes in the walls and with the touch of a finger it can sway
noticeably but even bumping into and everything it hasn’t fallen (only
like 8 contact points on the ground since we forgot several of them)
|
Hasn’t fallen yet
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| | | | | | | | | Author: | Nubs_Select | | Posted: | Nov 9, 2022 12:42 | | Subject: | Re: [Joke] Building with/without a plan | | Viewed: | 21 times | | Topic: | Off Topic | |
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| In Off Topic, SylvainLS writes:
| | In Off Topic, Nubs_Select writes:
| | And then you have people like my dad who fit in several spots
He is super confident in everything he builds and knows how it works but no one
else can figure out how it hasn’t fallen over. For example my dad helped me build
the stand that my drawer units go on (like 95+ 64 drawer units) none of them
are touching the ground and are built on a free standing stand since my dad didn’t
want to put and holes in the walls and with the touch of a finger it can sway
noticeably but even bumping into and everything it hasn’t fallen (only
like 8 contact points on the ground since we forgot several of them)
|
Hasn’t fallen yet
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| | | | | Author: | 1001bricks | | Posted: | Nov 9, 2022 12:37 | | Subject: | Re: [Joke] Building with/without a plan | | Viewed: | 21 times | | Topic: | Off Topic | |
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| | | Does this apply to LEGO building? What kind of LEGO engineer are you?
|
We're pros, we've built maybe 100 models that are buildable IRL and hold.
Problem is; often we've to check with real parts because sometimes even the
most recent studio version doesn't compute a collision for example.
I had this a week ago: what was designed was impossible before we added a single
Plate to make a bigger gap and have no collision.
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| | | | | | | Author: | SylvainLS | | Posted: | Nov 9, 2022 13:09 | | Subject: | Re: [Joke] Building with/without a plan | | Viewed: | 19 times | | Topic: | Off Topic | |
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| In Off Topic, 1001bricks writes:
| | | | Does this apply to LEGO building? What kind of LEGO engineer are you?
|
We're pros, we've built maybe 100 models that are buildable IRL and hold.
Problem is; often we've to check with real parts
|
Always check with real parts
But trying things in a CAD helps a lot.
| | because sometimes even the
most recent studio version doesn't compute a collision for example.
I had this a week ago: what was designed was impossible before we added a single
Plate to make a bigger gap and have no collision.
|
There’s 2 (types of) problems that are difficult to solve here:
1. Virtual parts (LDraw parts here) are ‘perfect’ and ‘perfectly in-system’:
a N×M LDraw brick is exactly N×M studs while a real brick has 0.1mm tolerance
on each side (otherwise you couldn’t place the bricks side by side and if you
managed it they would fuse together).
(Two pet peeves of mine:
— 4070 is all wrong, the bottom is wrong, and the side stud is too short: IRL,
you can’t put a 4070 next to a brick with 4070’s side stud between the two.
— Technic holes on bricks are wrongly placed at the same height as side studs.
They should be 0.12mm higher.
LDD had the first problem. For the second, its Technic holes were 0.08mm too
high (0.2mm higher than side studs).)
2. Collisions are simplified, especially on round shapes. And there’s a tolerance
that’s sometimes too big.
TL;DR: Collision detection is a hint, not “the Truth.”
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| | | | | | | | | Author: | 1001bricks | | Posted: | Nov 9, 2022 13:23 | | Subject: | Re: [Joke] Building with/without a plan | | Viewed: | 18 times | | Topic: | Off Topic | |
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| | | 2. Collisions are simplified, especially on round shapes. And there’s a tolerance
that’s sometimes too big.
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Here it is.
There is a tiny actual collision, it's visible especially when you select
the parts (otherwise it hasn't been seen during the design), and it doesn't
show a collision (transparent part/sub model):
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| | | | | | | | | | | Author: | SylvainLS | | Posted: | Nov 9, 2022 13:48 | | Subject: | Re: [Joke] Building with/without a plan | | Viewed: | 20 times | | Topic: | Off Topic | |
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| In Off Topic, 1001bricks writes:
| | | | 2. Collisions are simplified, especially on round shapes. And there’s a tolerance
that’s sometimes too big.
|
Here it is.
There is a tiny actual collision, it's visible especially when you select
the parts (otherwise it hasn't been seen during the design), and it doesn't
show a collision (transparent part/sub model):
|
Yep. About 1 LDU in.
With experience, you learn that’s the kind of build to look at closely.
… and you do look… but then a few days later you change something else further
away and that moves one part and re-causes the undecteded collision
Even when it seems to work, I test with real bricks (and there, I don’t care
for the colour or even sometimes the part, provided the shapes are the same where
it matters).
Another problem with CADs is the unbuildable build, or, worse, the build you
can’t unbuild.
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| | | | | Author: | cycbuild | | Posted: | Nov 9, 2022 15:24 | | Subject: | Re: [Joke] Building with/without a plan | | Viewed: | 20 times | | Topic: | Off Topic | |
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| In Off Topic, SylvainLS writes:
| | So, here’s the joke:
What’s the difference between an X, a centralien, and a gadzart?
— When an X builds a bridge, the bridge falls down. But they know why the bridge
fell down.
— When a centralien builds a bridge, the bridge falls down, they don’t know why.
— When a gadzart builds a bridge, the brigde holds, they don’t know why but it
holds!
Does this apply to LEGO building?
|
No restrictions on the scale/material? Technic is too easy. Without Technic,
I think 'X' would finish first with illegal techniques and then their
creation spontaneously combusts.
| | What kind of LEGO engineer are you?
|
A filthy casual. Very dirty and irresponsible. At least, in terms to the dude
who spawned my father. Grandpa was a US Army engineer, with an impossible fondness
for hard labor. He who wouldn't let his surgeon son (doctor dad) do any sort
of fixing or fishing, but he taught me as much as he could. What stood out to
me, no matter what he was working on, from furniture to yardwork, was his habit
of redundant solutions.
(If I built Lego like him, I wouldn't be satisfied until it could deflect
a bowling ball and I'd still use MEK to make sure it could survive a cannonball.
Then, after that, coat the final product in Roman concrete and prayers, so it
will survive atomic bombardment and planet-killer asteroids.)
When I build with Lego, nothing is meant to last forever or defy the brick separator.
Everything will end up in pieces. For the most part, if it looks cool and sticks
together for the time being, that's good enough for me.
| | Me, of course, I think I’m a unicorn: I’ll build the bridge, and the brigde will
hold, and I’ll know why, haha! …until I actually have to build the bridge!
|
Of course! I also believe your stomach rumbles smell like strawberries.
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| | | | | | | Author: | SylvainLS | | Posted: | Nov 9, 2022 15:41 | | Subject: | Re: [Joke] Building with/without a plan | | Viewed: | 16 times | | Topic: | Off Topic | |
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| In Off Topic, cycbuild writes:
| | […]
| | Does this apply to LEGO building?
|
No restrictions on the scale/material? Technic is too easy. Without Technic,
I think 'X' would finish first with illegal techniques
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Yes, like a worm hole
| | and then their creation spontaneously combusts.
|
Yes, like a worm hole
| | | | What kind of LEGO engineer are you?
|
[…]
(If I built Lego like him, I wouldn't be satisfied until it could deflect
a bowling ball and I'd still use MEK to make sure it could survive a cannonball.
Then, after that, coat the final product in Roman concrete and prayers, so it
will survive atomic bombardment and planet-killer asteroids.)
|
| | When I build with Lego, nothing is meant to last forever or defy the brick separator.
Everything will end up in pieces. For the most part, if it looks cool and sticks
together for the time being, that's good enough for me.
|
If it doesn’t use illegal techniques and it survives the table being bumped into,
I’m okay with it.
| | […]
Of course! I also believe your stomach rumbles smell like strawberries.
|
Hmm, maybe I shouldn’t have used the word ‘unicorn’: too many things associated
with it
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| | | | | Author: | helge | | Posted: | Nov 9, 2022 15:59 | | Subject: | Re: [Joke] Building with/without a plan | | Viewed: | 25 times | | Topic: | Off Topic | |
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| | | So, here’s the joke:
What’s the difference between an X, a centralien, and a gadzart?
— When an X builds a bridge, the bridge falls down. But they know why the bridge
fell down.
— When a centralien builds a bridge, the bridge falls down, they don’t know why.
— When a gadzart builds a bridge, the brigde holds, they don’t know why but it
holds!
Does this apply to LEGO building? What kind of LEGO engineer are you?
Me, of course, I think I’m a unicorn: I’ll build the bridge, and the brigde will
hold, and I’ll know why, haha! …until I actually have to build the bridge!
|
On the wall beside the main entrance on the military station on the Norwegian
island Jan Mayen there is a sign that says:
Theory is when everything is understood, but nothing works.
Practice is when everything works but nobody understands why.
On this station we unite theory and practice so that nothing works and nobody
understands why
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| | | | | | | Author: | 1001bricks | | Posted: | Nov 9, 2022 16:01 | | Subject: | Re: [Joke] Building with/without a plan | | Viewed: | 21 times | | Topic: | Off Topic | |
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| | | On the wall beside the main entrance on the military station on the Norwegian
island Jan Mayen there is a sign that says:
Theory is when everything is understood, but nothing works.
Practice is when everything works but nobody understands why.
On this station we unite theory and practice so that nothing works and nobody
understands why
|
Excellent 
And I like this:
In theory there is no difference between theory and practice, while in practice
there is.
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| | | | | | | Author: | SylvainLS | | Posted: | Nov 9, 2022 16:08 | | Subject: | Re: [Joke] Building with/without a plan | | Viewed: | 24 times | | Topic: | Off Topic | |
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| In Off Topic, helge writes:
| | […]
On the wall beside the main entrance on the military station on the Norwegian
island Jan Mayen there is a sign that says:
Theory is when everything is understood, but nothing works.
Practice is when everything works but nobody understands why.
On this station we unite theory and practice so that nothing works and nobody
understands why
|
The génie militaire¹ strikes again
(¹ Lit. “military genius,” actually “military engineering.” The puns write themselves
in French )
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| | | | | | | Author: | Nubs_Select | | Posted: | Nov 9, 2022 16:15 | | Subject: | Re: [Joke] Building with/without a plan | | Viewed: | 24 times | | Topic: | Off Topic | |
|
| | | On the wall beside the main entrance on the military station on the Norwegian
island Jan Mayen there is a sign that says:
Theory is when everything is understood, but nothing works.
Practice is when everything works but nobody understands why.
On this station we unite theory and practice so that nothing works and nobody
understands why
|
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France, Nouvelle-Aquitaine
Netherlands, Utrecht
United Kingdom, England
USA, New Jersey
Canada, Ontario
Norway