Sort:  

Robert Shiller, 1996: the stock market is in a speculative bubble.

Media, 1998: So, Shiller, the stock market is up, you were wrong.

Stock market, 2000: Implodes.

The fundamental property of an asset bubble has been met for most of Bitcoin's existence: people are only buying it because they think it will go up in price, not based on the value that its network provides.