Really, so anything you see is knowledge, hear or touch is knowledge. You eyes, ears and touch are never wrong or can't be fooled. You eyes, ears, and touch automatically know what the sense is.
You eyes, ears and touch can only be wrong or fooled if and/or once you believe.
Truth is you believe they do and then you test your beliefs or don't.
That's a very dumb and irrational way of thinking. You will constantly contradicting and harming yourself. Believing something to be true before having any kind of knowledge of it isn't a good way. Eating a poisonous mushroom because you believe it isn't poisonous isn't a bright way of reasoning. Why do you want to believe in a million false things and not a million true things.
The only reason we can learn is because we believe we know.
No, that's how we don't learn and don't advance. How can we learn and do something better when we a believed that we are already doing it the best way. You will not progress very much. How can you learn something new if you believe that it can't be known, or don't believe that it can be known.
Can you prove reality is not just in your mind.
Yes, you can unless if you already believe that it is just in your own mind.
Is all that you see, hear and touch knowledge or do it only become so with trial and error or proof.
Yes it is. That's also how you are able to skip some trial and error resulting in gaining more knowledge at a fast progressive rate. You gain knowledge about doing things both ways, the right way and the wrong way.