"So, how are we going to change the past?"
"Emily, dear, I thought you'd never ask.
Through pure physics and cell biology,
Molecular matters studied by me
With B.F. Skinner-- his friend called him 'B'--
Back in my salad days at MIT."
"I thought all this time you went to Princeton."
"Much earlier, back during the Flintstones.
My lasting contribution to science,
By which this estate is richly financed,
Has to do with applying discipline
To study behavioral regimen."
"What's with the verbose, happy horsecrap, Gramps?"
"What Emma means is we know you are champs

"At analysis of thought in the race."
"Yeah. Time is booty, let's cut to the chase!"
"All right, I get it, skip the credentials.
Allow me to express the essentials:
All time travel per se is redundant
As multiple outcomes are abundant
Sub-atomically, happening now--"
"My camera, my laptop! Holy cow!"
"It's alright, Dad, you know how Tex gets."
"Yeah, science mumbo-jumbo makes him wet."
"Here's my alternate outcome selector,
Programmable, digital, tri-vector.
We don't need to visit some prior day,
To change, like the Beatles song, 'Yesterday.'"

"We just transversed a checkpoint, I'm guessing."
"Name the album to advance the lesson."
"Why didn't everyone have Gramps in school?"
"His threads is greg, but his swag is way cool."
"All we need to do is transport ourselves
To current parallels like tiny elves."
"You mean we aren't going to change this present?"
"Trade Scotty Rolen for someone decent?"
"Make Bugles corn chips a health-conscious snack?"
"Forget all that nonsense: where's my jet pack?"
"Literally, these multiple outcomes
Exist simultaneously, at once!
ADSPOT is a cosmic channel changer
And actual present rearranger."

"If I heard what you said in the kitchen,
You're sending us on some kind of mission."
"One for each of you, lucky there are three,
With this old fort to be held down by me."
"And Gramps, you are the man for that mission,
But tell me why, with all your addition
We all can't crash the same cosmic party
Instead of each one to their own sortie?"
"The computations were astronomic;
To find even three was economic!
'There's nothing you can do that can't be done'
Relates the size of each mission in song.
I'm sending you on a human-sized task,
And just be yourself is all that I ask."