The Nature of Random
"The future, just like the past would be present before it's eyes."
Pierre-Simon LaPlace, 1814
What he was talking about with that statement, all the way back then, was that with all things being equal, everything, theoretically, can be predicted.
This is an old offshoot of pre-quantum times. But nevertheless, in essence, he is correct.
Watch this Veritasium video on YouTube....
Veritasium - What is Random?
Now watch this GIF.....
As a veiwer, you can see that parts of that GIF are the same, yet other parts change.
That is where "compression" comes into it and that is why gifs and videos can be compressed. Notice all the blue-green and the black. Those parts can be frozen and compressed.
But in the middle of it, there is the Daffy Duck part. That is the random in the middle of the non-random.