“… and a group of junior mining stocks where just the hint of a possible discovery has led to spectacular price gains and market capitalizations that bear no resemblance to current reality.”

http://www.zerohedge.com/news/2017-11-03/investing-bubbles

(no idea how to embed this … but would be welcomed!)

https://www.youtube.com/watch?v=p4wM5KvUGEc