I did the worst of anybody here so far and I like the test. It just verifies what I'v known for many years from amny other tests (Ishihara being the first): I have faulty red-green vision and no amount of monitor calibration is going to fix that.
Now if someone could come up with an effective way of producing a reliable "eye calibration profile", I'd be interested.
This test appears to be similar in a way to audio tests in which a person can compare and try to reproduce a specific series of tones. The goal of the test is to see if one has “perfect pitch,” or how close to “perfect pitch” one has.
Here we see that, in a similar way, not everyone sees color hues as they exist. Of course there are a number of possible reasons for this. The accuracy of the monitor, if the monitor is color calibrated, if the background lighting in the room are too bright or impart a color, the mood of the person taking the test and any number of other external influences. But the long and short is that many don’t have quite the ability to discern hues as they might want to have.
This phenomena raises some interesting philosophical questions, but they are perhaps best left for other forums….