I read The Starship and the Canoe after it was mentioned in a reply to me [1], what a great book. The theoretical physicist father, Freeman Dyson, champion of

I read The Starship and the Canoe after it was mentioned in a reply to me [1], what a great book. The theoretical physicist father, Freeman Dyson, champion of Orion, pretty much said that the idea was crazy and he wouldn't have pursued it further by the 70s IIRC. Of course, other scientists' options may have differed. https://news.ycombinator.com/item?id=44596988 https://news.ycombinator.com/item?id=44596988