Academic randomness

(L = Left, R = Right)

usually, you think randomness is just random, right?
LLLLLLRLLLRLR
But, there's a thing called academic randomness, which is where it does have a pattern which can be seen after being studied.
Let's look at an example:
LLRLRRLR
Do you see how each L and R equals out to 0? If we group them, we get
LLLL and RRRR,
essentially 4 of each. All you have to do in order to create Academic randomness is make the patterns equal out to the opposite.
Don't get it? Check out another example:
LRLRRRLLRLRRLL
and another:
LLRLLRRRL
Except, that last one wasn't correct. Why?