What Exactly is Spacetime? Explained in Ridiculously Simple Words

The video explores the concept of space-time, starting with the basic idea of using coordinates to describe positions in space. It introduces time as a fourth dimension and discusses its perception in classical physics. The video then delves into Einstein's special theory of relativity, explaining the interconnectedness of space and time. It further explores the general theory of relativity, highlighting how massive objects distort space-time and create gravity. The video concludes with a visualization of space-time and an explanation of gravitational lensing, illustrating how these concepts enhance our understanding of the universe.

Discuss the implications of the general theory of relativity on our understanding of gravity.

What is gravitational lensing and how does it demonstrate the effects of space-time distortion?