Answer:
A tower at the root of all confusion.
Before Google, we actually had to physically look things up in this building full of knowledge.
There is 10 birds on a branch, a man shot 5 of them. How many were left?
We are two brothers on opposite sides of the road, but we never see each other. Who are we?
In many hallways you would stand, if not with this in hand.
How did the farmer find his wife?
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?