T-Rex: Back in the time of History, how sight worked was pretty confusing. Rather than light entering our eyes, folks thought our eyes were sending beams OUT to whatever we were seeing.
T-Rex: Oh snap! It's the emission theory of vision, bitches!
Dromiceiomimus: But if it were true, how come we can't see in the dark?
T-Rex: Ah, that's because our eye beams need sunlight to work properly. And before you say "How come we can glance quickly at stars and see them even though they're super far away", THAT'S because our eye beams move infinitely fast, OBVIOUSLY.
T-Rex: The theory also implied that anywhere someone wasn't looking was TOTALLY DARK.
Utahraptor: That's kind of awesome!
T-Rex: I know! I imagine Earth seen from space, spots lighting up wherever people are looking, darkening briefly as they blink, beams blasting out into the universe whenever someone glances above the horizon.
T-Rex and Utahraptor: Totally sweet!
T-Rex: Anyway! It turns out that emission theory was wrong: our eyes don't shoot out energy beams; the only things we ever shoot out of our eyes are tears, lymph, and blood.
T-Rex: And even then: ONLY SOMETIMES.
