I can't help but think of the famous humpty dumpty quote > When I use a word," Humpty Dumpty said, in rather a scornful tone, "it means just what I choose it t

I can't help but think of the famous humpty dumpty quote > When I use a word," Humpty Dumpty said, in rather a scornful tone, "it means just what I choose it to mean—neither more nor less." "The question is," said Alice, "whether you can make words mean so many different things." "The question is," said Humpty Dumpty, "which is to be master—that's all." The fact is that pixels don't have a well defined meaning. Some people use them as squares, some people use them as samples. Then you get into subpixel font rendering, where you quite explicitly acknowledge the screen as master, and you design your image for a desired result. So yeah it's an ecosystem of people doing different things with different interpretations, and trying to mostly play nice with each other.