What if reality is not reality at all, but a simulation so advanced that no one inside it could ever tell the difference?

The reality we understand and interact with daily might, according to some scientists, be nothing more than an elaborate simulation. This hypothesis, intriguing as it may be, is supported by various ...

Physicists have long struggled to explain why the universe started with conditions suitable for life to evolve. Why do the physical laws and constants take the very specific values that allow stars, ...