I just saw The Martian again - this time at a regular 3D showing. The reason I am posting a follow-up to my previous post, is that I want to state, for the record, a change that I noticed - an edit in the film. Now, I know this is a minor edit, but it’s the sort of thing that we argue about with respect to Star Wars (did Luke throw the grappling hook twice? Was the Biggs scene ever shown in theaters?). In Star Wars, we assume that 20 years of memory has filled in gaps that weren’t there, and wish we could go back in time to confirm one way or another what we really saw. So, I’m doing this NOW, less than a month after my first viewing (which was a special pre-screening), so that 20 years from now, there will be some evidence of this particular change in case people start arguing over it. So FWIW, here it is (SPOILER ALERT):

In the first showing, when the crew decides to blow out part of their ship in order to slow it down, one of the crew members mentions that doing so will reduce their living space on the return home. In the second showing, there was no such mention.