When Good Marbles Go Wrong. Well, I thought yellow and orange and black and red were sort of a foolproof combination. Obviously there's a difference between foolproof and damfool-proof, as an old engineer buddy of mine used to say. This is the disastrous end to a very hopeful design. It went back in the kiln for some more experimenting. The other side, where the experiment happened, is in the next picture . . . |