This article points to some indicators suggesting another one is about to burst.

http://www.zerohedge.com/news/2017-03-18/signs-silicon-valley-tech-bubble-about-...

"So, how does this moment compare with the time leading up to the dotcom crash?  Here is the take of one Silicon Valley software recruiter:

“I got here in 97 and it was like it is now – incredibly packed, impossible to commute, high apartment costs,” Dinan said.

"We’re seeing overvalued companies, funded based on hopes and dreams and aspirations and not good business models. Companies counting users and eyeballs rather than profits. There are a lot of similarities.”

Another echo of the dotcom era is what Dinan calls “bad habits” such as the allegations of sexual harassment at Uber and human resources startup Zenefits cheating on mandatory compliance training.

“There was a lot of crazy behaviour in the late 1990s, including sexual harassment. It’s a result of there not being discipline,” Dinan said.

“The [dotcom crash] happened very suddenly and without any warning,” Damodaran said. “When it does happen everyone says they saw it coming. If you saw it coming then why didn’t you get out of it?”

Well, when all else fails there's always the 'negging' option to drive valuation..."

So what have you got against Austrian economists?
Schumpeter for example was a great theorist and visionary.
I'm willing to look at data put up by anybody whereas, despite your protest about freedom of speech in your postscript, you give a very good impression of a closed mind.