Is there such thing called random event?

Suppose we toss a two-faced coin to the air, and let it spin in the air until fall back to the floor. We will agree that we don’t know what comes up, head or tail, we agree too see this as a random event because the answer would probably be one of head or tails, or another very small chance that the coin will stand on its perimeter. Then, we can quantify the probability of every possible result of the tossing by comparing the likeliness of the result to happen, usually 1:1 in coin-flipping case.

But is it really a random event?

We have developed classical physics to explain motions since Newton. The elaboration of Newton’s law of motion is adequate to predict the result of a coin-flipping event, whether it will be head or tail. All we need to have to predict the result could be the height of flipping, mass of the coin, air resistance, rotation per time, angle, and so on, so based on newtonian physics we can simulate the motion of flipping coin, thus we know which side of coin will come up.

So flipping coin, if we see it in deeper scientific perspective, is not randomness at all, the head side doesn’t come up by chance. It is governed by physics of the junior high school.

Still, is there something that happen randomly?