Re: [csswg-drafts] [css-color-4] (ok)lch implementations break the entire purpose for authors (#9449)

All of this could have been avoided if everyone would have simply realized that a one to one stimulus-sensation model is a completely mythical hobgoblin of little minds. As such, the essence of the model itself is nonsense.

What does OK* or any of the models report for the “perceptual lightness” of the diamonds in the following Adelson demonstrations? Remember, this is one of the *simplest* spatiotemporal articulation states for stimulus, so one would hope that one of these models would pass the test?

![Adelson Snake - Upper Right Only](https://github.com/w3c/csswg-drafts/assets/59577/bdb4e00f-7e17-4aa3-88c6-9c06b2802d1f)
![Adelson Snake - Upper Left Only](https://github.com/w3c/csswg-drafts/assets/59577/cbd804b5-0fd0-4436-968b-cc1ebabd4292)

There is no one-to-one correspondence between a sample of stimulus as measured by some human device and the cognition from the neurophysiological side. It’s complete and utter rubbish.

And the subject of “gamut mapping” is therefore fraught with peril. If the goal is a certain “articulation constancy”, it will never be had using these ridiculous models. It’s literally two hundred year old misconceptions, that will only, as we’ve seen with OK*, make nonsense more prolific and the results **worse**.

A first step toward getting out of a hole might be to avoid layering more nonsense on top of the hole, and stop digging.

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Received on Thursday, 14 December 2023 20:21:21 UTC