One comment about frame rates: the only reason 120hz looks better (and exists at all in our current TVs, even up to 600hz) is LCD panel response time and ghosting.<p>A standard movie, shot at 24 or 30fps, looks better in a 120hz screen vs a 60hz one, even thought there are still only 24 different images to be displayed per second, and both refresh rates are much higher than the available frames. A higher refresh rate means the screen can switch between frames faster, so it's actually displaying repeat frames, but the reduced ghosting makes everything look sharper and smoother.<p>In addition to that - ignoring the snarky paragraph underneath the picture - the example given where you have more intermediate states only applies up to 60-66fps; after this point humans are unable to detect any difference, due to ~15ms of visual delay and afterimages (ghosting!). People often mention studies where someone was able to detect an image displayed for 1/200th of a second or similar durations, but that doesn't mean that person can tell apart a <i>moving image</i> at 60fps vs 200fps. Our eyes have no shutter; we can capture light that was visible for way less than 1/60 of a second, but as soon as it starts moving our hardware limitations show up.