What is the logic behind PEMDAS?

Question

I know some places use BIDMAS as well. Overall though, to someone who knows little about mathematics, why is this the correct order? What’s the exact logic behind it

In: 6

Answer 1

There doesn’t need to be any logic behind it, and there’s nothing that makes it the “correct” order.

The only thing that matters is that *we all use the same order*. The order could be absolutely anything; it doesn’t matter. As long as everyone is using the same order, then everyone will come to the same answer for the same question.