A brilliant video explaining the math involved in the exponential growth of epidemics and how measures to reduce exposure can reduce the spread by orders of magnitude. Video credit: 3Blue1Brown
Credit for the video: 3Blue1Brown
Concise video summary explaining the core ideas of block chain and the mechanics of cryptocurrencies.
Specifically on how need for trust in executing transactions is eliminated in this protocol.
Indestructible Coating?! – ft Veritasium