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What I find most interesting is the use of spatial organization when taking the Jeep apart. You could probably walk those guys out half way through, bring in a different set of guys, and they could put it back together by just looking at where the pieces are on the ground.



This is generally taught by good mechanics. I know my father, who owned a mechanics garage when he was younger, did this whenever he disassembled anything. I once saw him dismantle a motorbike clutch and reassemble it without looking at where he placed a thing, and this was over several days as he had to get replacement parts in the intervening time.

Now I ask, how much would these guys make if they could do things with that speed in a real mechanics shop where fully disassembling a vehicle likely has 20+ hours of labor tied to it.


It would not be possible in a 'shop' situation.

For one, everything would be bolted down with the bolts torqued to spec, instead of just strong enough to hold things together for a demonstration run.

Also things tend to rust and taking oxidized stuff apart without breaking it takes quite a bit of time and preparation, sometimes multiple days (if the part is precious enough, for instance on classics it can definitely be worth the extra effort).

Then there's the accessibility of parts, this is a ladder chassis car, which means that the chassis and the body are two separate parts. That makes for a vehicle that is very easy to disassemble at the expense of a higher weight (and so reduced fuel economy) higher manufacturing expense and less safety in the case of an accident.

So you'd never ever get this kind of performance in real life situations.


That's what I was thinking too.

When I saw this, I imagined doing the same thing (alone) with my old 1987 Toyota pickup. It is difficult for one person to completely remove the body (I've had to raise it by myself to install body spacers) from the frame, but once the body is off, the rest of the truck would disassemble easily. Most of the effort is dealing with rusted/frozen fasteners. The rest of the vehicle comes apart fairly easily. Working on these older, simpler vehicles is pretty straightforward.

Contrast with my 350Z: it would take days to accomplish the same thing. Much more integrated system and access is more difficult.


I just had a flashback to a number of seized and broken rusty bolts. The horror.


Heat. Heat the sucker up, and it comes out easy.


I do the same thing whenever I take electronic devices apart. I never really thought about it, though.

Actually, I tend to use spatial organization a lot. For example, I can leave myself a reminder just by moving an object in my room to an unusual spot. For example, maybe I think of something right when I'm about to go to bed. I might just put my glasses somewhere slightly unusual (but not somewhere hard to find) and then I'll remember to think about what I was supposed to when I wake up.


Yes I do that all the time too. If I have a particularly good idea while I'm in bed, but am too lazy to get up and write it down, I'll usually stack some objects on my dresser in a weird pile, and when I wake up I see the pile and remember what I had thought about.

Sadly this kind of spatial organization ability is mostly lacking in computer interfaces, although that seems to be changing recently with things like Panorama in Firefox 4 (and other things I'm probably not aware of).


> Sadly this kind of spatial organization ability is mostly lacking in computer interfaces,

Siracusa’s writing on that is worth a read (relevant bits start at page 2):

http://arstechnica.com/apple/reviews/2003/04/finder.ars


It's not completely lacking. I can just move a file to a different place on my computer's desktop, just as easily as I could move a real file on a normal desk to leave myself a message.

The interesting thing is that it doesn't even have to be relevant to what it's supposed to remind me of. In fact, the more unique (and thereby, less relevant) the change is, the better the odds are that I'll remember what I want to.

The primary downside is that it makes you more sensitive to people moving your stuff around. They generally have no clue that they could be disrupting something.


The key is to put things down where you'll think to look for them when you want to pick them up again. The same principle works when deciding how to structure code.




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