To answer the final question; our perception is in fact our reality, because it is the only thing we can see. In a Matrix scene, Morpheus says:

What is real? How do you define real? If you're talking about what you can feel, what you can smell, what you can taste and see, then real is simply electrical signals interpreted by your brain.

The answer is something similar to that, all by nature we have a high level of subjectivity in our reasoning, so that reality is subjective and varies depending on who sees it.

Maybe we can be aware that our knowledge is modified by our perception, making us a little more reasonable, although being aware that our thinking, no matter how reasonable we are, will be biased.

It is an interesting topic without a doubt, of which you can spend hours thinking about it without noticing it.