If there existed a perfect clone of you, would it also be you? Would it act in exactly the same manner as you (like a mirror) or would it act differently? If it acted differently then would it still be you? At what point would it not be you?
Is math something that humans created or something we discovered? Is looking at reality mathematically an accurate representation of how things work?
Would it be more frightening to discover that humans are the most advanced species in the universe or that we are far from being the most advanced species in the universe?
Your perception of the world is just what your brain constructs for you from the signals sent by your senses. Plus, there is a slight delay, so you aren’t even experiencing the simulation in real time. What would it be like if humans could perceive what the world is actually like and do it in real time? Also, what are the ramifications of every single person’s reality being a little different and unique to them?
There is zero chance that ALL your firmly and dearly held beliefs are true. So, which of your beliefs are most likely to be wrong and which are most liable to be true?