... except "Blows to the head" has everything to do with this from the article to OP's point.

When you have a number of HN commenters correcting you, it's not them it's you.

Multiple people in one place can still be completely wrong. Concussive events are what matter when it comes to CTE; many of them occur without physical contact to the head just as impacts to the skull may not have concussive effects on the brain. What matters is sudden acceleration, not contact to the head.

[1] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2995699/

[2] http://www.uwhealth.org/sports-medicine/clinic/concussion/11...

I'm not sure if you're new here, or just in a foul mood, but myself and others have been pretty calm commenting on your original post. Your comparison was weak, completely off topic, and you get upset when it's pointed out? Where do you think you are?

Take a moment and review the HN Guidelines please: https://news.ycombinator.com/newsguidelines.html

> Be civil. Don't say things you wouldn't say in a face-to-face conversation. Avoid gratuitous negativity.

Just stop, your abusive and negative comment was already flagged, and you continue to dig your hole deeper.

Guidelines are exactly that, guidelines. If you can't follow them here on HN please avoid commenting.

I will engage no further with a user like yourself who cannot comment in a civil matter.

Endorphone entered the discussion with an interesting and plausible perspective. I can understand his or her frustration that multiple responders completely misinterpreted that perspective. All of the Endophone's visible comments are measured and reasonable. (Edit: much less so the most recent comment, to be fair).