Back to the ... Present?

The above picture is a hoax. Marty McFly did not visit our present day world in any of the three Back to the Future movies. Believe me, we just had a Back to the Future marathon over the past week and even RD can attest to the fact that the relevant date in the future found in the 3rd movie was 21 October 2015. The other significant dates were 26 October 1985 (present day), 05 and 12 November 1955 (when lightning struck the Clock Tower), 02 and 07 November 1885 (the date on the tombstone).

In summary, this is what I remember about the trips the time machine made (excluding the one minute trip of Einstein):

1. Marty travels from 1985 to 1955 while trying to escape the terrorists

2. Marty (aka Calvin) travels back from 1955 to a new 1985 timeline

[Doc Brown travels to the future]

3. Doc Brown returns to 1985 and brings Marty and Jennifer to 2015 because Marty Jr. was going to get into trouble

4. Old Biff steals the time machine and travels from 2015 to 1955 to give himself the Sports Almanac

5. Old Biff returns to 2015 from 1955 leaving part of his cane in the DeLorean

6. Doc, Marty and Jennifer travel from 2015 back to a different 1985

7. Doc and Marty go from 1985 back to 1955 in an attempt to fix the dismal 1985

8. Doc from the future gets struck by lightning with the time machine set for 1885 leaving Marty (in the black leather jacket) stuck in 1955

[Young Doc Brown sends Marty from 1985 back to 1985 in Part I]

9. Marty of Part II travels to 1885 to save the old Doc Brown from getting killed using the DeLorean the Doc left hidden in a cave.

10. Marty (aka Clint) is pushed by the train and falls off the ravine to go back to 1985

The way I figure it, based on the three movies, at some point in time in 12 November 1955, there were four "instances" of the time machine.

a. The time machine in young Doc Brown's garage which Marty came in Part I (1)

b. The time machine which Biff stole in Part II (4) from 2015 to go back to the past

c. The time machine behind the billboard which Doc and Marty came in Part II (7) when they returned to try to fix what Biff had done

d. The time machine hidden in the cave by Doc Brown from 1885 (9) that they used for Part III

I know one can 'over think' the inconsistencies and impossibilities of the whole space time continuum so I will not even try. RD has his own theories, some of which he disproves as soon as more logical ones are formulated.

By and large, it was a good blast from the past.