401Ks are systemic algorithmic trading

[CoachKandSportsguy]

https://www.youtube.com/watch?v=j8nP7YgQpqU

includes the financial discussion of active versus passive.
The financial history of IRAs, 401Ks and opt in versus opt out.

Michael Greene is a very, very seasoned and very well researched financial fund manager, who discusses the market dynamics and intuitive misunderstanding of passive investments.

Also made lots of money in the 2018 volmageddon trade, based upon the 1987 stock market crash analysis.

[CoachKandSportsguy]

For the bogle heads and other "passive index" worshippers, start at around minute 58 and listen carefully to the Mike Greene's presentation to Fed and IMF why passive indexing will eventually crash the market . . and there is nothing which can be done about it, thanks to Vanguard and Blackrock with regulatory capture. . . the relentless bid towards monopolistic ownership.

This is one of the best stock market fundamental versus technical / passive versus active discussions for serious investors.

And if you believe with Mike Greene's analysis, then you should constantly reduce your equity exposure as you age.

good luck to everyone!