It's an Ode to the Beatles. It just let us feel how our lives would have been had there been no Beatles , no Michael Jackson etc etc. And take the movie on face value and not to be taken on a scientific note. Try to feel what the creators wanted to tell you and you will adore this movie. Oh , i loved it. Many times i tried singing along with the movie. The lead actor Himesh Patel was true to his character , so was his love interest lily James. Not to mention Ed Sheeran. And I knew so many unknown Beatles song. Best moment came when the hero met with John Lennon. It was like time travel stuff. So , overall really watchable movie in a sea of movies in Netflix. You will learn a two of good life lessons. I learnt.