It's because of Marty visiting '55 his Dad becomes a successful sci-fi author. He is the one who encourages George to keep writing and compliments his work, it is because of this self esteem boost George gains confidence in his abilities. It has nothing to do with George "pretending", neither is he ever made aware of his son's time travel exploits. How the heck did you get that from this article? It's obvious this piece isn't wrote by AI, the author uses 'one' as a pronoun 6 times. AI would never be that repetitive or lazy. Also this theory is not theirs, it's been around more than 30yrs, it's one of the earliest possible explanations for Doc Brown seemingly not recalling Marty from '55 in '85 and makes perfect sense.

Not necessarily. Marty writes Doc a letter informing him of his fate in '85. Doc knows to wear the vest because of the contents of the letter. Marty could of (like 1885 Doc did with his letter) given instruction for his letter to be deliverered at a specific time, most likely not too long before the first use of the Delorean. The letter that Marty wrote could also of been why the two meet initially. Doc seeks him out in '85 and asks for his help BECAUSE he read Marty's letter.

Why should Marty of ed Doc? The answer IS because it hasn't happend yet lol. Marty doesn't Doc from when he travels to '55 because he doesn't travel to '55 UNTIL '85. It's impossible for Marty to the Doc from '55 until AFTER he travels to '55 himself.

Think about what you said. We know that because Marty knocks the tree down in the past that is why the Mall's name is changed when he returns in the present (Ripple effect) right? Marty's actions in the past directly effected the present/original timeline. If he DIDN'T return to the same timeline his actions in the past (knocking over the tree) would NOT have influenced the present timeline. The tree wouldn't of been knocked down in a DIFFERENT timeline and the Malls name WOULDN'T of changed as a result. The fact it did change proves he returns to the original timelime. It changed BECAUSE what he does in '55 is the SAME timeline when he returns to '85. There is an alternate timeline created by Future Biff's actions in the sequel however but the original movie is all the same timeline.

He looks Marty's clothes over to make sure they are correct for the period he is sending Marty to, which is input into the Delorean BEFORE it reaches 88mph. That happens in two instances. Neither with forsight or future knowledge, it's simply Doc being prudent. In the 3rd film when he sends Marty back to the 1800's. Doc assumes cowboys wore the clothes he got Marty (to which Marty is doubtful, explaining he "never saw Clint Eastwood wear anything like this") If '55 Doc knew of his life in the Old West he would of known cowboys wore nothing like the getup he gives Marty. He also gives Marty futuristic clothing in the 2nd film again because he's sending Marty to the Future (which Doc has visited at that point) to blend in. It has nothing to do with Doc knowing what's going to happen next. He's unaware of his death in the 1800's until they look him up by chance and he didn't know Marty would travel back to '55 initially hence why Marty didn't have period appropriate clothing when he first got there (the '85 radiation suit and 'life preserver' gillet) Doc also had no idea Marty would be "Back from the Future" in '55 a 2nd time. Therefore he couldn't of always known.