Can You Trust Your Eyes in Spacetime?

The video explores the fundamentals of spacetime geometry, focusing on flat spacetime and its representation through spacetime diagrams. It explains the concept of world lines, parallel transport, and geodesics, distinguishing between inertial and non-inertial observers. The video also delves into tangent vectors and introduces the concept of 4-velocity, setting the stage for discussions on curved spacetime in future episodes.

How does the concept of parallel transport relate to flat spacetime geometry?

Describe the significance of tangent vectors in the context of spacetime diagrams.

What is meant by the term '4-velocity' as used in the text?