Elon Musk @elonmusk
@DJSnM @Erdayastronaut @CharlesNOtrumps @rweb11742 Absolutely. Production/testing of rocket engines is over 90% of the problem. This is true in general. For cars, production is over 99% of the problem. That 1% inspiration is very important, but it’s less than 1% of the pain. — PolitiTweet.org
