Carmack on why transatlantic ping is faster than pushing a pixel to the screen
I am not really clear on the measurement methodology. Why is a game controller involved?<p>Did he trigger the ping from the same game controller button?<p>Did the game controller trigger the frame buffer swap on the graphics card?<p>At 240Hz the lower-right pixel on an LCD will be painted 4ms after the upper-right pixel. Where were the measurements taken.<p>Yes, LCDs are scanned devices, just like CRT's, you don't see it because of the slow response time.<p>Lastly, I didn't see any numbers.  Where are the measurements?