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Take a look at this for example. There is a scientific experience that demonstrates that even if you look something it changes the nature of reality. If you can't demonstrate an absolute truth then everything remains subjective, including your own self.

https://www.sciencedaily.com/releases/1998/02/980227055013.htm

If there is no absolute truths then every other truth is relevant. This statement doesn't have to be intrinsically true but relatively. Stop thinking in black and white. You hurt yourself.