TL;DR summary: Problem: cabin would inevitably vibrate at some point and astronaut's chairs would too, making displays impossible to read. Soution: put a sens

TL;DR summary: Problem: cabin would inevitably vibrate at some point and astronaut's chairs would too, making displays impossible to read. Soution: put a sensor on the chair and synchronize the displays to only pulse their light when the chair (and thus astronaut's eyes) returned to the same location.