Categorials are or functions that accept arguments, and when you pass it to pipe, you just have to pass the function name co which means you can't pass the arguments. So this remeolive function just accepts one argument as a list, and it performs like olar removal and just returns to foleitise. Factorize telesapathiman in machine learning as algaritms only, except numerical data. And soo just does that, figures out how many different categories there are, and then gives em a number that can be sent off to machine learning,. You see, i'm learning, right? I'm just following along with you here, also