Author or experimental observation?

We see the many books in our daily life.
Every book has different content with different style of explaining and presenting!

But if two books on the same topic contain different content and different method of explaining and conclusion is also different in all that.
but then the reader should choses which book?
It will create a confusion in the mind of a reader that whether this is right or that is right
Same situation is for the humans!
What to trust , which to trust, why to trust??
what we say is really exist?
or what i always see that is reality ?
Single idea can do many big things!
Today with the single idea i found everything
Only break time is the time to check books are right or not ?
Similarly i checked all books and found one book was opposite what was written in it
Then just with the disastrous force thrown the notebook and didn't even meet friend properly went to the open place!
Then thought that the author is wrong or my eyes are wrong!
So i conclude that what is written in book is not always right, we can also be right!