When you let two spec (specifications) around too long, like in a Mt Fuji meeting, you finish by having one of the spec over another and both getting very excited. Then no longer than 9 minutes later you’ve got a new spec, a very noisy one. If you do that with only one engineer around, the new spec might suffer of some genetic deficiency. But if you have two engineers around, best of two different companies, then you get a strong one who’ll shout in the ears of the entire committee for the rest of the afternoon.
Yeah, never let two bored engineers look at specs too close. You’ll get trouble with a brand new spec.