[Omedetou]

You can learn whatever the author is trying to relay.

Also alot of random facts can be found in anime, such as in Air Gear recently.
Fact: If Barack Obama were to have his body switched with a teen Japanese girl and stay in her body too long it would "Grow a mushroom".

Obviously good stuff their!

On a more serious note Manga is the same as any literatue if you actually look at the context of manga they are more along the lines of books than comics in the way most are written. ( Hence Graphic Novels )