Ask HN: Best book you read in 2010 and briefly why

It really opened my eyes to a lot of new ideas

Mediocre novel, tremendous ideas. The prose is a slog but worth it.

Snow crash was great as well.

Also his "Cryptonomicon", a phenomenal novel.

Siddartha by Herman Hesse was my favorite book this year.

Ender's Game by Orson Scott Card

Surely you're joking, Mr. Feynman! is also a great listen via audiobook, especially on road trips!

Foundation had me pausing every few pages to think

The Foundation trilogy

For unexpectedly awesome, Suarez's Daemon and Freedom.

Seriously one of the best novels I've ever read.

Probably the celebrated Harry Potter and the Methods of Rationality, for reasons others have stated over and again

Very good. Highly recommended.

"The Black Swan" by Nassim Nicholas Taleb