As long as you don't remove things from the problem in the name of removing them from the solution. Or, to be less terse, don't say "Well, you shouldn't need t

As long as you don't remove things from the problem in the name of removing them from the solution. Or, to be less terse, don't say "Well, you shouldn't need to solve that problem!" or "You're holding it wrong!" Reality doesn't give you neat problems which map cleanly to the simple solution, and adding complexity is the only way to solve the problem, as opposed to a dishonestly reduced form of the problem.