Sorry, this is not game-breaking, don't make such pretentious topic titles.
Nor does this warrant the use of CAPS in any way. You have an opinion on Skill books, some are not available, live and learn, shit happens, Hit the New Game button.
Problem solved.
Are you for real? Are you suggesting that Larian purposely implement it so that some starting skills would be available by vendors and others not? It may not be game breaking for your characters, but for a lot of others it is. Try and empathize with us.
