If you have seen the movie Sliding Doors starring Gwyneth Paltrow of Goop, you will remember this: Gwyneth’s character was fired from her PR job. She rushed for her train on the London Underground. The plot then splits into two parallel universes, which in one of them she missed the train by a second, in the other one she got into the train just as the sliding doors closed behind her. The one second difference between being inside and outside of the sliding doors resulted in a lifetime of completely different outcomes. By now, you must be asking, what do Sliding Doors have to do with how I met my dog?