This is an interesting list. It’s missing some of the true great classics, like Frankenstein, and it has a number of unusual, less well known titles, but there’s a lot to like on it. There’s certainly a lot for people to disagree about, but it may well have your less often cited favorites, too. What do you think?
The Mars trilogy is good, although Blue Mars is my favourite, Hitchhiker’s is good but is more of a comedy, Flatland is ok but is more of a satire of Victorian society. The Planiverse by AK Dewdney is a better 2d world book.