there was a Story

there was a Particular Room.

there are a few Doors to the Particular Room.

each Door can be opened through several Methods - knocking, shouting at it, banging, using a crow-bar, searching for a key to try the lock IF IT IS LOCKED... or just turning the handle, if it's not locked...

i cannot understand how Person can bang and scream at the Door, and not notice the Other Door...