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Despite the 2010s and 2020s being full of legacy sequels, reboots, and remakes, the Back to the Future movies still haven’t been touched. Robert Zemeckis and Bob Gale have both firmly stated that they will not allow a fourth Back to the Future movie to be made, which is great news for franchise purists (via THR). However, this also means that the franchise has never been able to address issues like these.
5) Doc Brown’s Rejuvenation Clinic Is A Dumb Excuse To Make Makeup Easier

One of the most impressive parts of the Back to the Future trilogy is its makeup. In the first film, many of the characters are seen in multiple forms. George, Lorraine, Biff, and several others are shown in their young forms and in old-age makeup, and the looks of both versions of these characters are seamless. However, the makeup on Christopher Lloyd is arguably the film’s most impressive. Doc Brown’s 1985 version is in his mid-60s, and the makeup on him is incredibly convincing. The actor was only in his 40s at the time of filming, yet you wouldn’t be able to tell by watching the film.
Early in Back to the Future Part II, Doc Brown tells Marty that he visited a rejuvenation clinic in 2015. He then tells Marty that he is wearing old-age makeup and that he really looks 30ish years younger. He rips off his old-age makeup and looks like normal Christopher Lloyd for the rest of the film.
In reality, the rejuvenation clinic was an excuse for the filmmakers to avoid putting on Christopher Lloyd’s old-age makeup anymore. Heavy makeup like that takes hours, and the production probably didn’t want to go through the process again for two more movies. However, they were stuck with explaining why Doc looked old at the end of Back to the Future. Thus, the silly old man disguise excuse. It’s hard not to realize that this is an obvious solution to production issues, and that the filmmakers probably didn’t want audiences to think about it too hard.
4) Back To The Future’s Cut Scenes Become Really Obvious

There were a lot of scenes cut from the first Back to the Future, and it’s easy not to notice them on a first viewing. However, they’re really obvious on a rewatch. In the final film, George McFly randomly eats a cereal bowl full of peanut brittle. This is because there was a cut scene in which George is pressured into buying tons of peanut brittle. There was also a cut scene in which Marty brings some of Doc’s personal belongings from 1985 to 1955, explaining why he has a hairdryer when he threatens George.











