Life is full of difficult decisions, but they don’t get much harder than this. Yes, Oppenheimer and Barbie will be released on the same day (21 July), and unless you can split yourself in two like an easily detachable plastic doll, you’ll only be able to watch one at a time. So, which one do you want to see first? If you’re not sure, don’t panic. We’ve got this incredibly helpful flowchart to help you decide.