What is fundamental to your question that no-one has mentioned is the concept of qualia.
https://en.m.wikipedia.org/wiki/Qualia
Essentially, everything you ever experience occurs within the confines of your body. Your understanding of reality is a sensorium created by your brain. It reflects reality, but it isn’t accurately representative of reality. We can never truly experience light, we can only imperfectly sense it with our imperfect senses.
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