QUOTE (Midas @ Feb 20 2012, 06:42 AM)

Way back in the day I was a boy scout (shocking admission, I know

), we took apart one of our leaders' motorbikes and put it back together again for our Mechanic's badge. Without his instruction and watchful eye, I am sure we wouldn't have been able to do so.
That's a group of children, defaulting, wouldn't you say? Not
exactly what the Shadowrun rules are reflecting.

[edit: That's a little flip of me. Let me say, instead: I agree (as below) that getting stuck is definitely a possibility, and the rules should reflect that. But the rules are, in this case, also intended to reflect what would have happened if you'd all had
several months or years to reassemble it, not just hours or weeks! Even then, failure should be an option! But so should success. I don't want to make it sound like I think that, given time, anyone
will successfully build the Eiffel Tower, just that, given time, anyone
might be able to. The diminishing pool prevents this latter possibility.]
QUOTE (Irion @ Feb 20 2012, 07:46 AM)

How could he? How could he do it, if he is lacking major parts of knowledge.
Well, that's how invention works, Irion. You
do know that there was a day when no engines existed, right? And someone, lacking major parts of knowledge, had to invent one? If that's quite possible, then why is the assembly of an existing engine by a novice not possible? Well, of course, it is: it happens all the time.
QUOTE (Irion @ Feb 20 2012, 07:46 AM)

I disagree. It is more about the dicepool. If we have plans and special tools to help us, it might be possible. (Of course we would need to be able to read those plans.)
Oh, Irion, have faith! You
honestly don't think you and I could take apart my car and put it back together without plans and special tools? I mean, pickle forks and pulley removers, sure, but what kind of "special tools" do you think we need!? Anyway, I promise you - I
absolutely promise you - that you and I, with our low skills and hand tools, could completely disassemble my car and re-assemble it - correctly! - given nothing but time. I'm not sure what it is that makes you doubt that, but I can assure you it wouldn't really be a problem. Hell, we could probably do the same with your car, and it's probably a lot more complicated than mine.
That's not to say we couldn't get stuck! Lord knows that my tiny Vehicle B/R skill has gotten me stuck once or twice, to where I couldn't proceed without a skill or tool injection!* The rules should certainly reflect the possibility that we won't succeed. But the existing rules for diminishing die pools basically completely eliminate any possibility that a years-long project can ever be completed by someone with a low skill, and that does not accurately reflect reality.
I don't see any other real way of testing the hypothesis, though, beyond you just coming over, having a few too many, and picking up a wrench. I can borrow someone else's car for a couple weeks if you want to give it a go.

*The top bolt on the transmission bellhousing of a BMW 3-series requires a set of extensions
almost as long as the car to remove. Frankly, I should have just cut a whole in the sheet metal of the interior. And don't get me started on what it takes to swap the engine on front-wheel-drive Cadillac.