so the discussion on the movie last time didnt go too well, coz i focused on scienctific concepts rather than the philosophy ... so i decided to make another thread 1)does back to the future at any point tell that marty actually slipped in parallel reality? or it doesnt become clear until II (i havent seen II)? or was it something we were supposed to interpret? 2) also, at the end, marty runs away from the terrorists again in the time machine ... and he will apparently go to another universe ... so will it keep happening? 3) also, different situations can take place in different realities ... but is it possible NOT to have same characters?