>conventional current is positive particle flow
>in reality, protons don't actually flow
Why is this allowed?
Physicsfags will defend this.
Because Heisenberg's uncertainty principle, how would you know they are moving or not moving, they could be moving and not moving at the same time. They are there, they may not be there. They can be everywhere at the same time, do you understand? You've brought this upon yourself, you've brought quantum mechanics into this.
Electrons flowing in one direction is equivalent to positive particles flowing in the other.
At the end of the day, it really doesn't matter. The key is to stay consistent with how current flow down a wire (or whatever) is defined.
Benjamin Franklin guessed wrong and assigned positive charge to what was in fact the sink of the current. Because this makes basically no difference as far as circuit design goes and electrons wouldn't even be discovered for another century, by the time we realized that current was made of negative electrons, it had already become convention and switching would be confusing.