You've taken it out of context.
We can learn within are pre programmed state. Just like machines. We just have a far more complex program and hardware.
We dont just learn. Theres an entire biological process that happens, without that biological process you cant learn. Castile is trying to argue that we aren't pre programmed and we can just do what ever we want. Which is clearly wrong and goes against physics and biology for a start.
So you think that every thing you do is already set when you're born?
If we was programmed then who done it? God? as you said we can't learn ourselves.