Wait, but where do you even draw the line then? If three green lights is just random, what number makes it weird? Is it four? Five? Like if you rolled a dice and got six three times, that's just luck. But if you got six ten times, everyone would say the dice are loaded. So what's the actual tipping point where coincidence becomes something else?
Exactly! That's the whole problem with trying to find a magic number. For a dice, ten sixes in a row is almost impossible by chance, so we call it loaded. But for traffic lights? The math gets fuzzy. It depends how many lights are on your route and their timing. Five greens might still be luck on a good day. There's no clean line, just a point where your gut says this can't be random anymore.