I don't really get what you mean. You said, in the context of ensuring conceptually difficult parts of a model/method were implemented: > This is why classes

I don't really get what you mean. You said, in the context of ensuring conceptually difficult parts of a model/method were implemented: > This is why classes are cool. You can extend them, modify them, and so on. Perhaps we should teach this more to fellow data scientists. I pointed out that both R and Python have similar object systems. > ou can implement what you want in Python relatively easy. I don't get why this is necessarily true, but I might be missing something. Can you clarify?