I've just been doing a 750 piece jigsaw puzzle with the kids while on vacation. I can't tell you how many pieces didn't fit until about the 7th time I tried them.

Anybody who thinks doing a 750 piece jigsaw puzzle has nothing to do with the philosophy of science or engineering either has not done a 750 piece jigsaw puzzle, or has not done science or engineering, or is not thinking optimally.

I think like everything in practical truth, theory is quite different from reality. It is the philosopher's noble task to narrow that difference, even as improvements in practice widen it faster than it can ever be narrowed.