I need a new desktop, might try building my own?

[wumpus]

Everything else fits together like legos. Expensive legos.

It is surprising how many things this is true for.

True for any industry that learned the lessons of Captain Murphy, USAF [of "Murphy's Law"]. Everything that *can* connect together, somebody *will* connect it together, so you had better make sure that only the right ones can connect together (pretty much the real source of Murphy's Law).

[wst]

Poka yoke.

I think the lego comparison is flawed. Lego's schtick is to be assembled however you like. Jigsaws, on the other hand. It's just one of those 3d ones and you don't get a picture to work from.