Simon walks you through several special relativity paradoxes and a brief proof of why nothing can move faster than light. He shows the working out of the distance formula.

Based on the following video tutorials by Sixty Symbols:

Time Dilation:

https://www.youtube.com/watch?v=jlJNsRZ4WxI

Relativity Paradox:

https://www.youtube.com/watch?v=kGsbBw1I0Rg&t=17s

Why does time go slower in rockets?:

https://www.youtube.com/watch?v=Cxqjyl74iu4

Why you can’t go faster than light (with equations):

https://www.youtube.com/watch?v=DGpwkWhnWAI&t=574s