If you have learned them, it's not too late. Martin Gardner mentioned an algorithm that doesn't work layer by layer, but instead starts off with all manipulations available, and gradually restricts which ones are admissible. In principle, just at the point no moves are admissible, the cube is also solved.
In that oh so distant future when I have nothing else to do, I'd like to try to work out this approach for myself.
In that oh so distant future when I have nothing else to do, I'd like to try to work out this approach for myself.