I seriously doubt that you're alt-tab'ing faster than you're making a saccade to another monitor. We're talking tens of milliseconds to glance over. What if you

I seriously doubt that you're alt-tab'ing faster than you're making a saccade to another monitor. We're talking tens of milliseconds to glance over. What if you have to hit tab 2/3/4 times to get to the application you want? And you have to stop and see how many tabs you need? Looking over at a different monitor is significantly faster.