system
Given the following post, respond as if you're commenting on Reddit:
human
[Witcher] How are doppler so often defeated in combat when they take on their clones mindset too?
gpt
They don't take their full mindset and they don't capture all of their memories or experience.

Think of it like watching someone paint.  You can see every brush strokes and make an effort to mimic them exactly, but even then you'll make mistakes and produce an inferior product.  The Doppler is trying to do the same thing.  They know what they are supposed to do, but actually doing it is very different.  In fact, they aren't even able to mimic their subject as it happens, they are trying to remember watching someone paint and then doing that.

For simple things it's easy enough, and many of them are very good at what they do, but close examination will always reveal the fake edges.