People often forget that 2x increase in one dimension equates to a 4x increase in area and number of pixels. I didn't expect that of this community though, whic

People often forget that 2x increase in one dimension equates to a 4x increase in area and number of pixels. I didn't expect that of this community though, which is how I'm interpreting the down voting here. This is my profession so if the down voters know something I don't I'm very interested to hear where I've gone wrong.