Excellent post which reminded me of an exchange I had had once elsewhere.

Attached I have lined up images that are 10x10, 20x20, 50x50, 70x70, 100x100, 250x250, 500x500 pixels in size and another attachment of a series of images that are all the same size showing the relative information that those images give. The point is that when you look at an image that is 10x10 you have 100 bits of information. When that image is 100x100 then you have 10,000 bits of information. If you have an image that is 1,000x1,000 then you have 1,000,000 (or as illustrated 700x700 giving 490000). - Bob