http://livingwithlag.com(via http://hackaday.com/2014/04/29/what-if-you-experienced-lag-in-real-life/)
You wouldn't accept lag offline, so why do it online? ume.net, a fiber broadband provider that offers up to 1000 Mbit/s, performed an experiment. Four volunteers got to experience internet's biggest disturbance in real life - lag.