I’m a fan of logistics, and as many kids do, I love water, too. I’m fascinated by how rivers move, how underwater streams move, how winds move. I’m fascinated by any kind of stream, even intangible, process-based ones.

When coordinate measuring machines (CMMs) first came on the scene in the 1960s and 1970s, parts and work pieces were measured by well-trained inspectors in clean rooms and labs far from the shop-floor hubbub.

This weekend my 3-year-old son and I were playing with his marble run set, and he said to me, “The marbles start together, but they don’t finish together!”