system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Wouldn’t the outcome of any random event generator (coin flip, dice toss, wheel spin, etc) depend on the starting conditions, therefore them not being completely random?

I’ve just recently thought about this. 

How can a random event generator truly be random, if they all depend on the starting conditions. Sure, you can flip a coin and make it so it flips 50.5 full rotations in the air but depending on whether the coin starts on Heads or Tails, it’s going to determine where it lands. 

Same with drawing a “random” name out of a list, or a hat, or whatever. It all depends on how the order/placements of the entire pool of names is initially set. 

How is anything ever truly “random”?
gpt
Often, calling things random in real life is based on knowledge. Say there's a shuffled deck of cards in front of you. You peek at the top one and see that it's the 3 of diamonds. If someone else comes in and draws a card, for you, it's obviously not random. They're going to draw the 3 of diamonds. However, from their point of view, they have no information about the deck. There's nothing in their mind that suggests that any card is more likely than any other to be on top. So, it makes sense for the other person to call it random; they have no way to predict the card that would work more than pure chance.

Same thing with flipping a coin. Which face it lands on is going to be set once it's flipped, but it depends on the coin's position, velocity, shape, as well as the state of the air around it and where it lands. None of these can be precisely measured (or precisely controlled) if you're just flipping a coin by hand, so neither heads nor tails is more likely than the other from your point of view.

At a more fundamental level, we don't even know if events are always set by starting conditions, which is a concept called determinism. At a quantum mechanical level, physics seems to be truly random, with even apparently identical systems doing different things. It's possible that there are factors that we just haven't been able to measure that do make physics deterministic, but conceivably it might be nondeterministic.