[Calvin Locke]

You forgot that Mars Mission, or I should say, one of the Mars Missions, that failed because one or more of the
non-Feynmans allowed both English and Metric systems in the design and planning of the mission?

And I thought NASA may have had a ray of hope of redemption with the departure of Dan Golden.

[theFIRMbss]

>...both English and Metric systems in the design and planning of the mission?

I've put up Feynman's
official Challenger notes
in a long post here:

Personal observations on the reliability of the Shuttle (by Richard P. Feynman)