#and then because this is bttf (and also steins;gate inspired too) our joseph cabret is far more than he seems...

[doctorbrown]

MCFLY JULY ‘24 ⸺ 「 20 / 31 * LOCAL LEGEND 」

December 5, 2000, 22:54

1646 Riverside Drive, Hill Valley, California

Divergence: Twin Pines(α) — %.5382217

“Doc!!” Marty shouts, leaning so far back in the chair that, for a moment, he experiences that panic-inducing sensation of falling that has him scrabbling for the edge of the desk as his life flashes before his eyes. “Doc, he’s on! Joseph Cabret! He responded to our email! Get over here!”

Emmett grunts his acknowledgement, casting one last long look at the mess of wires hooked into the housing of the Flux Capacitor before he drags a second chair over to the computer. The cursor is already in place over the single unread email in the box and Emmett can see Marty’s finger twitching in anticipation, his eyes glued to the screen.

“Go ahead, Marty,” he prompts, only barely finishing the word go before the email pops open to an intimidating wall of black text. Marty whistles, scrolling down to the bottom of what looks like a very long-winded, very complicated scientific dissertation regarding alleged time-travel that reminds him of most of the papers scattered around the garage right now.

Dear 1.21_Jigowatts,

Emmett groans upon seeing their ridiculous username come back to haunt them in the reply and Marty throws him a lopsided grin and a shrug that says it’s way too late to change it now, Doc.

“It’s the Internet, Doc—who cares? Nobody knows who we are.”

That is the last time he lets Marty pick the name for something without reviewing it first.

Before I address everything you wrote in your email to me, I wanted to comment on your username. Were you aware of its significance in relation to time travel when you joined the forum or did you simply happen upon it by chance? Could it be that you’re a time-traveller too?

If so, I’d love to share stories while we can.

I’ve been getting a lot of questions about the future, often all limited by the scope of your present time asking for answers to inconsequential things. The next election results, lottery numbers, things of that nature, as if that’ll verify my time-traveller status. And while I can’t say I’m surprised—I’ve studied your current time carefully and unfortunately, your time is remembered for being one of the most chaotic and selfish, so it’s not like I can fault those who ask—there are some, like yourself, who have been asking complex and meaningful questions that show a genuine interest in the possible future and in time-travel that I’m all too happy to answer, as best as I can.

To answer your simplest question first, the reason I stopped in this time is an entirely selfish one. Where I’m from, most of the people I care about have been killed. There was someone very important to my Dad and my family who was killed when I was very young that I wanted to finally meet. I know he's alive now, so I'm here. Even if you think it’s a waste of time, remember that time is of no consequence with the time machine.

Now, to the bulk of this message. I see you’re intimately familiar with the Everett-Wheeler model of quantum physics, which saves me a lot of explaining. You must be a man of science. That model is correct. When I say worldline, I refer to what you’d call an ‘alternate reality’ or an ‘alternate timeline.’ So, each individual worldline represents a set of paths and limits—possibilities, if you would—taken through space-time. These are all subject to the laws of special relativity. No two are exactly the same.

There is a device installed in my time machine that measures the change in each worldline I visit. Its inventor is dead, so I can’t tell you too much about how it works other than a general overview and how to read it, but from what I understand, it collects information from the ‘current’ worldline and uses that to establish a baseline. Then, upon the next jump, a second reading is taken of the new worldline and measured against the first one. The difference—or Divergence, as the device’s creator named it—is expressed in percentages. That's how I know.

The email continues on for several more paragraphs, each delving deeper and deeper into the realm of quantum mechanics with lengthy, detailed answers provided to each question they'd asked in their initial email. A dull ache throbs at the base of Marty’s skull as the words start to blur together and he leans back in his seat, needing a little more space between him and the screen.

Unlike him, Emmett has leaned forward, elbows propped up on the table and his fingers laced tightly together as he takes in every word, unable and unwilling to stop now.

For once, Marty can’t quite get a read on what his friend is thinking based off his strangely serious expression and the occasional noncommittal noise he makes while his eyes dart across the screen. The Doc’s thinking about something—he always furrows his brows like that when he’s deep in thought, puzzling out some scientific conundrum—that he knows he’ll share with him once he’s had the chance to process the information.

He himself isn’t quite sure what to think. After all, he’s heard some of these terms thrown around by Doc in the course of their testing and refinement of the Flux Capacitor. It has to mean something that Joseph Cabret knows it too.

Emmett finally breaks his attention away from the screen to train his still-thoughtful gaze on Marty.

“What do you think, Doc? You think there’s any truth to what he’s been saying the last couple weeks or you think it’s all bullshit?”

The words I look forward to your reply, JC stare back at them from the bottom of the screen and Marty doesn’t know why he suddenly feels self-conscious.

“I think—we can’t entirely rule out the possibility.”

“You mean—seriously?”

“I’m not saying definitively yes or definitively no. A lot of the science he talks about is sound. I’ve come to many of the same conclusions in my own work, as you’ve seen in the tests with the Flux Capacitor. We know time travel is possible. However, that doesn’t necessarily mean everything he says is true. Without any proof positive or photos of his time machine, we’ll have to take everything else he says with a grain of salt.” A flicker of uncertainty passes across Emmett’s face, there and gone in the span of a blink.

He pushes the chair back as Marty asks, “And?”

Emmett blinks. “I’m sorry?”

“I didn’t read all of that,” Marty admits somewhat sheepishly. “I tuned out somewhere around black holes or wormholes and I figured you’d fill me in if there was anything important on the science end I needed to know. But I watched you read it and I saw that look on your face. There's something else bothering you about this.”

He doesn’t answer right away and Marty doesn’t rush to break the silence. Finally, he sighs, turning back to the screen. “No, you’re right. There is something that jumped out at me, but let’s wait and see what else he has to share with us before I start getting ahead of myself.”

 “You’re going to answer him back?”

“Why not?” Marty beams, clearly pleased. “Let’s take a couple minutes to sit with this and then I’ll start working on our reply. If it all turns out to be for nothing in the end, at least we pursued the possibility rather than let it pass us by.”