TIL: NFL careers

The average NFL career is short — about 3.3 years.
Quarterbacks fare longer, with an average career span of 4.4 years.

https://fivethirtyeight.com/features/the-backup-qb-who-gets-paid-a-lot-to-never-play/

That would explain the importance of systems and set plays

TIL: bullshit jobs

The crucial economic question, therefore, is not whether individual jobs are “bullshit,” but whether they increasingly perform a zero-sum distributive function, whereby the dedication of ever more skill, effort, and technology cannot increase human welfare, given the skill, effort, and technology applied on the other side of the competitive game.

Numerous jobs fall into that category: cyber criminals and the cyber experts employed by companies to repel their attacks; lawyers (both personal and corporate); much of financial trading and asset management; tax accountants and revenue officials; advertising and marketing to build brand X at the expense of brand Y; rival policy campaigners and think tanks; even teachers seeking to ensure that their students achieve the higher relative grades that underpin future success.

https://www.project-syndicate.org/commentary/zero-sum-economy-fuels-high-inequality-by-adair-turner-2018-08