Charlie picked up on how to use the dough mixer by watching Ollie. When Ollie gets fired the guys talk him into using the dough mixer and he does it flawlessly. But his only downfall is he is so smart he is stupid.
As you have read I have given you three reasons why Algernon is a split personality of Charlie. As you can tell whatever happens to algernon will happen to charlie like how algernon regressed charlie did the same.how algernon could finish am maze he never done before quickly and so could charlie it shows they both learn