1

Could one devise a first image that contained a "hidden" sub-image where said sub-image is such that colorblind people would typically have an easier time seeing said sub-image embedded within said first image than a normally sighted person

"Can i hide a picture of my cat inside another picture so that only my colorblind son could see the cat, as a way to empower him?"

4

Yep, in fact there is a 'Reverse Color Blind Test' that is difficult for normal sighted people to pass but is relatively easy for colorblind people to pass. Here's an example:

enter image description here

BTW, the word is "NO"

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