• As stated before, Professor Brand is feverishly trying to solve the gravity equation so that if and when Endurance finds a suitable planet, the population of Earth can colonize it.
Does it seem odd that the survival of the entire human race is dependent on one old man? Every time we see him he's sitting alone in his office staring at his scribblings on the blackboard. All it would take is one slip in the shower and humanity is doomed.
Sure, later on Murphy begins helping him, but why isn't there a huge team of scientists and mathematicians helping him solve his equation?
• Play the Intersellar Drinking Game! Take a shot every time Professor Brand says, "Do not go gentle into that good night. Old age should burn and rave at close of day. Rage, rage against the dying of the light!"
You'll be dead of alcohol poisoning somewhere around the hour and a half mark.