Tenuous Science Humor

So while watching The Muppet Christmas Carol this Christmas, I made a dumb, barely-viable physics joke:

MICHAEL CAINE: (squinting into white light) Spirit, what is that light?
CREEPY DOLL: It is the past!
ME: If it’s the past, shouldn’t it be red-shifted?
MY BROTHER: BOOOO!

So today, I explained to my sister my thinking: that the Doppler effect works for light as well as sound, so my theory was that the past is moving away from us.

ME: … so, things moving away from you are red-shifted. Stuff moving toward you is blue.
MY SISTER: AHA! That must be why flashbacks are so often in sepia tone in movies!
ME: Oh my god! And we’ve just figured out why ever since The Matrix every movie that’s set in THE FUTURE has that goddamn blue filter!
MY SISTER and ME: AHA!
MY BROTHER: You guys don’t make any sense.

Which is kinda true. I’m not even sure I know what I’m talking about any more, but it made me laugh.