These notes contain comments on N. N. Taleb's paper "Bitcoin, currenscies and bubbles". The original paper can be found here:
https://fooledbyrandomnessdotcom.wordpress.com/
In this note we do two things:
-
Reformulate the proof in the appendix.
-
Give an argument for the fact that all paths eventually hit the absorbing boundary using the reflection principle for Brownian motion.