When we see the shadow on our images are we seeing the time 11 minutes ago on Mars? Or are we seeing the time on Mars as observed from Earth now? It's like time travel problems in science fiction. When is now when was then?
In the original draft I was 27 and Peter was 55 in the script. That's not the same as a guy in his 40s and a dad in the end of his 70s. It's a different point in both our lives.