I think zacharyvoase's point was that it might either emphasize or deemphasize how much hotter or colder something was. Because the eye doesn't see blue->yellow

I think zacharyvoase's point was that it might either emphasize or deemphasize how much hotter or colder something was. Because the eye doesn't see blue->yellow->red hue changes consistently, what looks like a "big" change on the graph might actually be fairly small.