Comprehension/Fallout 3

Comprehension is a perk in Fallout 3.

Effect
Doubles the amount of skill points gained from reading skill books (+2 instead of +1). Obviously, the perk only affects skill books read after selecting the perk.

With a total of 324 skill books in Fallout 3 (not including  add-ons), this nets a total of 324 extra skill points if the perk is taken prior to reading any skill book, for a total of 648. If the bugged respawning books are used, this perk allows for an effectively infinite source of skill books for Science and Big Guns skills (from Big Book of Science from the Ant Researcher in Shalebridge and the U.S. Army: 30 Handy Flamethrower Recipes from a raider using a flamer in Bethesda Office East).