1. who the hell told this to you...
2.you can realize theorytically any algorithm in 3dgs, there are already some advanced ai projects out there.

ps. i dont have the book but heard that it is useless.

ps2. i guess you should take a look at lite-c free or trial version to see if it suits your needs. Buying commerical at the begining is not necesassary(since it will take time to learn things), first you get the basics with free version then you can buy it. This is my personal opinion tho..