Found in 3 comments on Hacker News
raverbashing · 2021-02-15 · Original thread
Ah I see https://www.amazon.com/Are-Missing-Real-Estate-Boom/dp/03855...

One can invest in Bitcoin if one wants, but only because The Market Can Remain Irrational Longer Than You Can Remain Solvent

shangrila · 2012-03-28 · Original thread
The #1 sign we are in a bubble is that people are writing articles saying we are not in a bubble.

For reference, compare the following two editions of a book regarding the recent housing bubble. These were written by the chief economist for the National Association of Realtors at the time, David Lereah.

Original title (2005):

http://www.amazon.com/Are-Missing-Real-Estate-Boom/dp/038551...

"Updated" title (2006):

http://www.amazon.com/Real-Estate-Boom-Will-Bust/dp/03855143...

I think we all know what happened next.

When people start spewing denial, it's time to think about heading for the exits.