That's not true, actually. Tetrachromats see the same range of electromagnetic wavelengths as everyone else—there's just an extra cone in there that's mostly us

That's not true, actually. Tetrachromats see the same range of electromagnetic wavelengths as everyone else—there's just an extra cone in there that's mostly useless. There's a great video on YouTube called Tetrachromats Don't Have Superpowers that explains it quite well: https://youtu.be/fDoAs0qN7lU https://youtu.be/fDoAs0qN7lU