Observer

bystander watcher interobserver outness observation representative hyperloop no communication theorem frame of reference monitor speculist voyeur sabbatist absolute time spectator aberration of light transit holoviewer crew pathological science speculator occulter sentry absolute space time relativity schrödinger's cat nonobserver relativistic mass cosmological horizon aberration observatorial living history terrestrial telescope libration self officiated observerless recursant heat haze rashomon effect thatcherize international talk like pirate day parallax clock paradox dead ground autophony time dilation obverse eyes on ground train wreck occultation observation post intraobserver lorentz factor sightline adhere observership fly on wall motus peculiaris flatlander meeting function awareness aircraft meridian endwise fire mission follow gnomon doppler effect beholder office rest mass grandstanding mountain spectre vanishing point pareidolia absolute space spect actor on line participate apparent brightness member belt of venus observers observer pattern someone someone watching watching witness eyes