<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>sliken</author><text>Keep in mind that helmets are designed to absorb energy.  In your accident it&amp;#x27;s clear that neither you, the bike, or your helmet had much traction.  So instead of tumbling (caused by rotational acceleration) you just slide.  I&amp;#x27;d expect any good helmet to absorb that energy.&lt;p&gt;The unique claim WaveCell&amp;#x2F;MIPS is making is that they can absorb the energy that&amp;#x27;s trying to rotate your head.  I&amp;#x27;ve seen no indications that this is a problem.  Tires have great traction, pretty much anything else (you, skin, bike, backpack, helmet, bike gloves, etc) have very poor traction so accidents rarely impart large rotational forces.  Even if they did the WaveCell is only going to absorb a minimal amount since the helmet is strapped to your head.&lt;p&gt;Mips and WaveCel are claiming &amp;quot;Rotation causes injuries&amp;quot;, engineering a solution to it, not proving it exists, and claiming they are safer because it.&lt;p&gt;Neither MIPS or WaveCel are claiming they absorb normal impacts better than normal helmets.  Generally both ANSI and SNELL have picked an acceleration and penetration standard that&amp;#x27;s a compromise between rider comfort and safety.  Helmets are tested against those standards.&lt;p&gt;MIPS and WaveCel have failed to prove any additional safety and instead of working with the safety standard folks are appealing directly to consumers to justify their 3-6 times price increase over other ANSI and SNELL approved helmets.</text><parent_chain><item><author>steelframe</author><text>I got hit by a truck earlier this year while wearing a WaveCel helmet. The outer foam cracked in two places and the cell structure on the inside collapsed in several places. The CT scan of my head came out clean and the ER physician discharged me within the hour. I think my post-incident symptoms were more indicative of shock than concussion, since I did sustain several fractures in my hand.&lt;p&gt;&lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;imgur.com&amp;#x2F;a&amp;#x2F;LdNQSRT&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;imgur.com&amp;#x2F;a&amp;#x2F;LdNQSRT&lt;/a&gt;&lt;p&gt;&lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;imgur.com&amp;#x2F;a&amp;#x2F;JL5ORlg&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;imgur.com&amp;#x2F;a&amp;#x2F;JL5ORlg&lt;/a&gt;</text></item></parent_chain></comment><story><title>Bontrager’s WaveCel material more effective at preventing concussions than MIPS</title><url>https://pelotonmagazine.com/gear/bontragers-new-wavecel-bests-mips-at-concussion-prevention/</url></story>
<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>leetbulb</author><text>That gif made my stomach sink. I&amp;#x27;ve taken spills like that, but not in traffic. Super glad you walked away with only some hand fractures. Be safe, friend.</text><parent_chain><item><author>steelframe</author><text>I got hit by a truck earlier this year while wearing a WaveCel helmet. The outer foam cracked in two places and the cell structure on the inside collapsed in several places. The CT scan of my head came out clean and the ER physician discharged me within the hour. I think my post-incident symptoms were more indicative of shock than concussion, since I did sustain several fractures in my hand.&lt;p&gt;&lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;imgur.com&amp;#x2F;a&amp;#x2F;LdNQSRT&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;imgur.com&amp;#x2F;a&amp;#x2F;LdNQSRT&lt;/a&gt;&lt;p&gt;&lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;imgur.com&amp;#x2F;a&amp;#x2F;JL5ORlg&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;imgur.com&amp;#x2F;a&amp;#x2F;JL5ORlg&lt;/a&gt;</text></item></parent_chain></comment><story><title>Bontrager’s WaveCel material more effective at preventing concussions than MIPS</title><url>https://pelotonmagazine.com/gear/bontragers-new-wavecel-bests-mips-at-concussion-prevention/</url></story>