T-Rex: Stephen Hawking says the best proof that time travel isn't possible is that we're not overrun by loads of tourists from the future!
T-Rex: Stephen Hawking says a lot of things!
T-Rex: And maybe the reason tourists aren't running around here and now is because they have, um, ALL OF TIME to choose from? If I could travel through time I wouldn't go back to yesterday, I'd go to the future! I already know what happened yesterday: I ate a bunch and then I pooped a bunch!
Dromiceiomimus: T-Rex!
T-Rex: THE PAST IS UGLY, Dromiceiomimus!!
Utahraptor: You're saying the reason we don't see any time tourism is that we're - boring?
T-Rex: Yep!
T-Rex: Scientists are all, "ooh, maybe you can only go through time in certain regions of space, or maybe you can't go back further than the invention of the time machine!" Poppycock, I say! Time travel is possible until we do something SO INTERESTING that it's inconceivable the future wouldn't want to check us out.
Off panel: I suppose now you're going to suggest we do something so amazing that the future will HAVE to check us out?
T-Rex: Nope! Firstly, Utahraptor, that's an INCREDIBLY tall order!
Off panel: ...And secondly?
T-Rex: Secondly, I, um, don't like it when my theories are proven wrong