Unitary Problems

NASA famously destroyed a Mars mission by making an error of units, performing a vital orbital-entry calculation in feet that should have been done in meters.

I didn't do that. But there is a typo in Appendix 2 of A Line In The Stars that I only spotted today. A Warlord class missile cruiser is of course 454 METERS long, not 454 MILLIMETERS.

Oops...