For the most part, there really are not too many resemblances between 1982 of the new timeline in the Part One and 2015 of Part Two. You have your flying cars and your robot machines in both eras, but that's pretty much where the similarities end. 1982 of Draft One is pretty much a portrayal of the '80s from a very early '50s perspective, while 2015 in Part Two is a portrayal of 2015 from an '80s perspective. It seems like nothing that was invented after 1952 in our world was invented in the new timeline of the first draft. Everything after that was all Emmett Brown's influence.

Just a few notes:

1. The fact that Emmett Brown was responsible for all the new inventions of the new timeline in Draft One is partially where I got the idea of Emmett Brown being responsible for the inventions of 2015.

2. I suppose there are purists who may not really like the idea of combining things like cellphones, MP3 players, and the internet into the futuristic inventions that was shown in 2015 in BTTF2 - but this seem to be a popular trend among fanfic writers.

In a story that I'm currently working on, called Twenty Years After, Marty and Calvin of the Almanac Universe visit the year 2006 - and Chapter Five pretty much focused on all the inventions on 2006. I figured that not everything we see in 2015 would necessarily be invented by 2006, but that a good amount of it would be.

From "our" world, I added in these following: the internet, DVDs, cellphones, MP3 players, and Ipods.

From Part Two, I've included: videophones, hydrators, dehydrated food, shoes with power laces, thumbplates, hoverboards (not the jet-powered kind), smart speakers (the device where you control appliances with your voice), and scene screens.

Things I've said weren't invented yet: jet-powered hoverboards and self-fitting or self-drying clothes.

Other inventions I've made up:

Microstoves: functions like a conventional oven but is much faster.
Nanowaves: functions like a microwave but is much faster.
Toaster Flashes: functions like a toaster but is much faster.
Vacuum-robots: a self-functioning vacuum cleaner.

The first three items were inspired by the hydrator, which can hydrate food in only a matter of seconds. I figured other appliances might be just as fast. The last item was inspired by the automatic dog-walker and the floating newscamera.

I wonder if Cleveland was named World's Most Beautiful City by 2015. In 1982 of the first draft, power was converted from Coca-Cola. In 2015 of BTTF2, power was converted from processed garbage. I think they actually have thumb plates now. They don't open doors, but they do show identification and can be used to pay for stuff.

It's a real shame that Rock and Roll was dead by their 2015.

I have some ideas for 2015 inventions:

Hover Snowmobile

A pill that makes people want to quit smoking. Take it everyday until you no longer crave one.

Laser teeth cleaning

Those are the only ones I have so far.

What about the pop culture of between 1989 and 2015? Being as the second film came out in 1989, I'm sure even the most stringent purists would say that the years between 1985 and 1989 would be identical between the BTTF Universe and our world.

I actually used 2002 as the cut-off year, as that was the year that Spin City ended. I do have a future crossover story planned between BTTF and Family Ties/Spin City. Alex P Keaton and Mike Flaherty are from the same universe (which is a little more like "ours"), while 2005 in the BTTF Universe would probably start to differ considerably.

Actually, I think the technology would start to diverge sometime before the year 2002 - but they wouldn't come into common use until a little after 2002.

Do you think the whole Harry Potter craze would take place in the BTTF Universe? Maybe some of the TV shows and book series would be slightly different, to reflect more the future technology of the BTTF Universe. On the other hand, some movies from "our" universe may never be filmed in the BTTF Universe - and there would just be entirely different movies in the BTTF Universe, instead. I could easily see Bart Simpson on a hoverboard, though - and I think The Simpsons started in 1989, if I'm not mistaken.

BTW, in Like Mike, Jennifer has come up with the script for Jaws 5: The Rising - as well the name for the Florida baseball team. Doc is responsible for all the future technology, though. I know, any random person from the BTTF Universe that doesn't exist in "ours" could be responsible - but why not give Doc the honour? After all, he was smart enough to invent the time machine - and, while he hasn't had much success with his inventions before then, who's to say he won't be more successful afterward?

BTW, it's not to say that Doc would directly invent the hoverboard or the hydrator - but he would maybe invent a special formula that would lead people down the road to create these inventions.

Oh, yeah, about the whole Queen Diana deal - maybe Prince Charles simply marries another woman named Diana, and maybe this Diana only exists in the BTTF Universe.

About Queen Diana, while she was alive in the original 2015, why not make her dead in the altered one? It's the perfect solution. I think there would be a Harry Potter craze no matter what universe.

I know there are all kinds of theories about why the technology of 2015 is different in the BTTF Universe. Of course, the out-of-universe explanation would be that you can't really predict the future - and it wasn't meant to be a serious prediction anyway.

Some people even seem to believe that it wasn't a true future that Doc brought Marty and Jennifer to - and that, as they reach the future through the natural course of time, it will be more like "ours". The problem with that would be, at the end of the trilogy, Doc takes his family to the future to see Marty and Jennifer. Because Clara was from the past, would this suddenly make 1985 not a true future? Then again, one might argue that it's because Clara was with Doc, who was from 1985.

There was one fanfic script writer named Mike Nichols, who wrote a trilogy of scripts surrounding Marty's and Jennifer's youngest child, Scott. In the scripts, Doc did decide to stay in the past with his family, and that was his explanation for the new 2015 being a little bit more like "ours".

They were very well-written and intriguing, but I do have a few quibbles. The first one is that I didn't really like the idea of Doc staying in the past with his family. I don't like the idea of splitting up Marty and Doc. The other one is that Marty Jr is still a wimp in the new future. With Marty having chosen not to race Needles, you think he'd be able to raise his son to have more confidence. After all, he did get George to develop confidence within a week. The other one is that Marty was portrayed as being too strict. Marty strikes me as someone who would be a very easygoing parent. Yeah, he was a bit grumpy towards his kids in the 2015 scene from BTTF2 - but that was also in the reality where Marty broke his hand and was unhappy for thirty years.

At any rate, though, I am in favour of the idea of Doc being responsible for the inventions that we see in 2015 from BTTF2.

Another thing I just thought about. If Harry Potter is a craze in the BTTF Universe, would the latter books be identical to ours - or do you think they would reflect the technology of the BTTF Universe more? Like, for example, the hoverboard being a popular toy with the muggles?

The Harry Potter books take place from 1991 to 1998.

At what point would guess the future of the BTTF Universe would start from ours. I'm sure purists would either say 1985 (Marty's present) or 1989 (the year BTTF2 was filmed and released). In that case, I think 1989 would be more likely, since they did show a few pop culture items that came out between 1985 and 1989 in the 2015 sequence. In my opinion, though, I think it wouldn't change too significantly until sometime between 2000 and 2010. I went with 2002, simply because that was the year that Spin City ended.

2002 sounds good. It often takes years to get inventions patented.

Right, exactly. I'm sure some of those inventions would be around before 2002, but they wouldn't be in wide enough use to make of a significance difference between the BTTF Universe and "our" world yet. I heard that they do have thumb plates now, but they're not used for crediting/debiting accounts.

The 20 dollar word is "extrapolated". While the future we see at the end of of very first draft is extrapolated from the very early '50s, the future we see in BTTF2 is extrapolated from the '80s - and they did include a few things that came out between 1985 and 1989. So I think even the most hardcore purists would acknowledge that the years between 1985 and 1989 is the same between "our" universe and the BTTF Universe.

It was probably harder for them to figure out the new technology for Draft One, since they have to think of how the future might be extrapolated from the '50s - even though the script was written in 1981. I can imagine that it would really mess up Marty's mind. I heard that the second draft was very similar to the first draft, even though Marty was made to be a little more likeable. I wonder how that script ended though.

The third draft is a little more like the final result, and the DeLorean was added. There was still the nuclear blast, though - and no clock tower. I think BTTF wouldn't be quite the same without the clock tower. It was in the fourth draft that the clock tower was finally added.

Have you noticed that in everything that takes place in the future, everything is streamlined?

The thing is, it is impossible to predict the future. There is no way to determine how the culture may change, or what new issues may pop up in the future. I guess the word "scrote" has more or less come into common use. In Twenty Years After, I actually did some research to find out when The Clapper was invented - and it turns out that The Clapper was already invented by 1985, which did surprise me a little. So I guess the idea of operating devices with your seems to be the most logical step up. Even in George Orwell's 1984, which portrayed 1984 (extrapolated rom the mid-1940s) in a very negative way, there were machines that would recognize human speech, and type accordingly. So that idea seems to have been around for quite a little while.

It almost does seem like 1982 was portrayed almost as a utopia in the First Draft, but just the sheer unfamiliarity of the world would be a living nightmare - along with the fact that there was no rock and roll. I wondered if colour TVs existed. It wouldn't be too hard for an early '50s person to conceive of - and The Wizard of Oz, which was filmed in the 1930s was coloured in the Oz scenes of the film.

Isn't "Scrote" a substitute for "Balls"?

I think the word is actually "scrotum". I didn't really think too much about what the word "scrote" meant, to be honest. I figured that "trank" is short for "tranquilized", and "lo-rez" is short for "low-resolution". The word "ziphead" is probably like "pinhead", and "scuzzball" is probably like "scumball", and "bojo" is probably like "bozo". I would guess that "lobo" is like "hobo". I know there's a Canadian band called Lobo, that was around in the '70s. In a deleted scene, the word "nump" was also used - as in "nump off". I'm not sure if it's supposed to be a substitute for "fuck" or "piss", or something a little tamer. In earlier script used the word "maxole" - which, I guess, is supposed to be like "asshole". Saying "interface with me" is probably like saying "communicate with me".

Color TVs were actually first invented in 1953.

That would be one year after 1952, which is the year Marty went back to in the first draft. I think that would still be pretty likely.

The 2015 we see in Part II is actually extrapolated from 1989 (when the movie was filmed), not 1985 (Marty's present). We know, because we see a few pop culture items that came out between 1986 and 1989. So maybe it was around 1989 that Doc Brown came up with the formula, that would lead to the future inventions that we see. I see it would've been interesting if Marty heard a song when walking into the Cafe '80s that the viewers would know, but Marty wouldn't have heard of yet. Hip To Be Square by Huey Lewis and The News would be a good choice. I don't think that song was out until 1986.

One consistency I notice with things in the media that take place in the future is that the technology changes but the cultures always seem to stay the same. I mean, like they don't invent a new type of music for people in the future to listen to. But that's okay. Music is hard to invent. Have you ever noticed how out of date the technology on the Jetsons is? The show takes place in 2062, and their computers may be considered small in the 1960s, but the computer screens on the show are so much bigger than the computers we have now.

I guess they wanted to leave that up to the imagination. I imagine they would have mostly the same music in the BTTF Universe as they do in "our" world. It seems like an earlier script did a good job of pinpointing the fact that some of the younger generation wouldn't like rock and roll - even though I never understood why those two young girls would even be at the Cafe '80s, if they didn't like the culture. The idea that only old fogeys would like Huey Lewis seems to be very far-fetched, though. There are plenty of people among the younger generation who like older music.

My step-dad's dad loves Huey Lewis and the News.

I saw this movie called Totally Awesome. It parodies a bunch of eighties movies. There was a scene where a little boy invents a new computer. People commented on how small and fast it was. Even though, the computer took up the whole wall and it took a whole day to calculate a math problem.

Science-fiction writers have no sense of scale, eh? ;)

It actually only makes fun of the outdatedness of things.

There are probably some purists who don't like the idea of combining the future of the BTTF Universe with the future of "our" world.