[jyl]

Hey, someone must know this off the top of their head.

Wasn't there a satellite, fairly recently, that malfunctioned because the engineers mixed up their units - inches to cm or something like that?

I am helping my 7th grade daughter learn to convert and proportion units. E.g. 55 miles/hour is how many kilometers/second? If 4 cakes require 16 eggs and 32 ounces of flour, how much eggs and flour for 3 cakes? And so on. It appears kids (or at least my kid) don't instinctively understand the need to be precise in carrying over and specifying their units. They abbreviate meters as "m" and then also abbreviate miles as "m", and don't get why I'm being such a stickler. So I thought there must be a really good story about Bad Things That Happen From Sloppy Units.