Interesting, I had meant to point out that I had no evidence one way or the other if it was actually true, the point is just the idea of keeping it simple. And

Interesting, I had meant to point out that I had no evidence one way or the other if it was actually true, the point is just the idea of keeping it simple. And your counterpoint about the graphite floating around is a good parable for why seemingly obvious, "clever" solutions often don't actually work, and that armchair critics should not assume the solution team was not smart enough to consider the obvious ideas :)