... and NASA has never admitted to the failings identified by Tufte (or Feynman in the Challenger investigation, for that matter). I own the pamphlet this PDF is the electronic version of, because I thought Tufte earned that copyright (not a sentiment I have about many works, in general I think the terms of both copyright and patent should be reduced to 5 years -- in the interests of replenishing the commons that was the explicit goal of the US intellectual property system).