"On the flight home, he recalls, “I was trying to understand why rockets were so expensive. Obviously the lowest cost you can make anything for is the spot valu

"On the flight home, he recalls, “I was trying to understand why rockets were so expensive. Obviously the lowest cost you can make anything for is the spot value of the material constituents. And that’s if you had a magic wand and could rearrange the atoms. So there’s just a question of how efficient you can be about getting the atoms from raw material state to rocket shape.” Brilliant.