Sound familiar at all?
As a character from "The Matrix" said: "The world as it was at the end of the 20th century. It exists now only as part of a neural-interactive simulation that we call the Matrix."
Hollywood blockbusters aside, scientists have been toying with this idea for years. Past mathematical formulas have shown there's likely either an overwhelming probability we're living in a simulation, or there's practically no chance of it.
It's been argued for the theory to be true that machines would have to become conscious — to improve themselves and run the simulation. The scientific community seems divided on this, too, with some thinking we'll have that kind of tech in the near future and some thinking it'll forever be impossible.
Could we actually prove we are or are not living in a simulation?
To keep the video game analogy going, occasionally they glitch. Some physicists have argued a simulated universe may do the same, but to us it would be seen as changes to the laws of nature. And just like a video game, these breaks from the laws would quickly be fixed by the creator.