Many of these definitions of bubbles are so broad that any investment can be seen as a bubble, thus there is no bubble-free asset; making it a negligible distin

Many of these definitions of bubbles are so broad that any investment can be seen as a bubble, thus there is no bubble-free asset; making it a negligible distinction. A definition I like, from Warren Buffet, on what is a bubble in contrast to an investment: You’re just hoping the next guy pays more. And you only feel you’ll find the next guy to pay more if he thinks he’s going to find someone that’s going to pay more.