4 ms·
In WW1, helmets were introduced to protect soldiers. Surprisingly the frequency of head wounds went way up. It took a little while to realize soldiers were "jus
by jfoutz 11y ago
In WW1, helmets were introduced to protect soldiers. Surprisingly the frequency of head wounds went way up. It took a little while to realize soldiers were "just" being wounded, rather than outright killed if they had no helmet.
- BostonEnginerd 11y agoThere's a similar story about putting armor on planes during WWII - http://www.johndcook.com/blog/2008/01/21/selection-bias-and-bombers/ http://www.johndcook.com/blog/2008/01/21/selection-bias-and-...