Why is the visitor's entrance to the Ministry of Magic via an out of order phonebooth? I mean, Muggles might be oblivious but isn't someone bound to notice people in robes are disappearing Clark Kent-style sometime or another, if not already?
Why are my reading glasses not in their case?
Why do we only have decaff instant coffee stocked in the pantry?
Why do people sit outside when it's going to rain and then complain to waitstaff that it's raining and they want to sit inside but there aren't any seats?