Post production is not just editing though.
There's audio, VFX, music, color grading, etc...
yea, but it means that Nolan hasn't released it to MPAA so no one knows the exact run time. But 2h 30 min should be a good ballpark considering what we know about the scale of the movie and IMAX limitations.
What if the 1 minute was true... I mean...
2010: 5 minutes in reailty is 1 hour in a dream.
2014: 1 hour in Miller's planet is 7 seven years in Earth.
2020: 195 minutes in the cinema is 1 minute in reality.