Indeed. I'm reminded of the time a childhood friend essentially discovered the inverted spectrum argument[1]. That is, we can't know if my qualia when perceiving the color red doesn't match yours of the color blue.
We were unfortunately young and in poor company, so the idea didn't receive the appropriate attention.
We were unfortunately young and in poor company, so the idea didn't receive the appropriate attention.
[1]: https://en.wikipedia.org/wiki/Qualia#Inverted_spectrum_argum...