A top strategist warns that the 'intellectual health of society' is in danger — and explains why investors should be very worried

Facts and evidence have started taking a backseat to opinion, and that mentality is bleeding into investing, according to Bernstein.
The firm scoured millions of books spanning 400 years in an attempt to provide quantifiable evidence of this trend.
Bernstein argues that this is a harmful mindset that distorts investor perception and could pose problems as the market enters a late-cycle environment.
If you've spent any time at all on Twitter, you've probably realized that facts and evidence often