T-Rex: FUN FACT: Did you know that if you're in a situation where your messages have a chance of being lost or misunderstood, then you can never fully share information with someone?
T-Rex: It's totally true, even if all the messages arrive unmolested!
T-Rex: So Dromiceiomimus, imagine I'm sending you a letter that says "hi". You get it, so now we both know that I said "hi", but only you know that YOU know that I said "hi". So you send a letter that says "got it", which I get - but then I know that you know that I said "hi", but you don't know that I know that YOU know that I said "hi". And so on!
T-Rex: We go back and forth sending "I got your 'I got it'" letters forever!
Utahraptor: So plausible, T-Rex!
T-Rex: Well, of course we wouldn't ACTUALLY do that, but the point is that we can never know the exact same information, unless it's 100% guaranteed that messages aren't lost or garbled. But the mail isn't like this!
Utahraptor: Oh man, this is just another one of your dumb postal service conspiracy theories!!
Narrator: MEANWHILE, IN THE PAST:
T-Rex: I plan on developing SEVERAL crazy theories about the postal service.