Even just considering not moving in is frustrating on its own . <| sep |> It certainly feels late when you have people constantly telling you you have to figure things out at 20 . My first boss told me if you don ' t have everything figured out at 23 you never will . Obviously that ' s shit advice but the point is that sentiment exists <| sep |> But it was a step in the right direction . Printing dozens of broken cards just right after that isn ' t . <| sep |> Nothing this year has been known for subtlety anyhow . Might as well keep it going until the end . <| sep |> That wasn ' t a normal blackhole . Future humanity presumably , using the data acquired from the black hole , were able to manipulate gravity , offering up all sorts of possibilities . In this fictional story , gravity can do backwards through time , so super advanced future humans create a device inside a black hole that allows you to send gravity signals through time . That ' s why the message shows up as lines of gravity that attracts dust in Murph ' s room . The reason they need McConaughey to go into the black hole to use it is in order to control the machine which gives you access to infinite points of time and space , he needs to have an emotional connection with at moment in time .