Back to the Future: Does physics of Marty's time travel add up?

Today is 21 October 2015 – the date Marty McFly and Doc Brown travel to in Back to the Future Part II. Can we reconcile the films with reality?

Quantum physicists say time travelers don't have to worry about

time travel - Why was Marty present in his jump to 2015 in Back to

What's your favorite time-travel logic? : r/sciencefiction

Back to the Future: The Complete Trilogy (DVD) [2020] – Back to

Back To The Future Day 2015: Is time travel actually possible

Scientists explain how time travel could be possible – but only in

Back to the Future (creative franchise): What are some of your

Time travel has been completely ruled out for good by scientists

Back to the Future: Does physics of Marty's time travel add up

Time travel is possible, but it's a one-way ticket

Quantum time travel doesn't follow Back to the Future rules

Time Travel and Time Line Iceberg : r/IcebergCharts