This is just the system argument, which I accept works well for understanding, but I'm unconvinced it works for qualia. Here's another thought experiment: R

This is just the system argument, which I accept works well for understanding, but I'm unconvinced it works for qualia. Here's another thought experiment: Replace the coloured filters with a system consisting of a camera connected to a computer which prints out the colour, which is then read by the achromatope. Here I assume you'd argue that the camera + computer doesn't experience colours, but the system (camera + computer + achromatope) does. Now, replace the camera + computer by a person who can actually see colours, who tells the achromatope which colours they see. In that case, the person who can see colours experiences the colours, and there's no need to invoke the system argument.