If you feel you are in a black hole, don't give up. There's a way out.

Stephen Hawking

In 2015, at the Hawking Radiation Conference in Stockholm, Stephen Hawking delivered this now-famous quote. While this was certainly an inspiring slice of advice, Hawking was very much focused on physics. To be precise, he was focused on the peculiar phenomenon of how the physical state of something disappearing into a black hole appears to be completely lost — which, according to the known laws of the universe, shouldn’t be possible. (Something entering a black hole should, in theory, come out somewhere.) Hawking suggested two possibilities to explain this, and here’s where things get trippy. Either information entering a black hole is translated into a “hologram” on the edge of the black hole itself, or it passes through and enters an alternative universe. So, yes, don’t give up because there’s always a way out — even if the exit leads to an entirely different reality.