There are many ways to prove that you can actually fool your senses. Here is an example if you want to do it. Dump your left hand in the cold water and dump your right hand in the warm water for five minutes. Then dump both hands in the regular water. You will feel one hand finds that water being warm and another one finds it being cold. Which hand will you believe? You won't depend on any hand this time because you have better knowledge than both hand's senses. However, that will not happen in the real world. You will have to try to discover things from one perspective or another and the knowledge gets formed based on that which is always incomplete.