<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>efficax</author><text>We still have a very poor understanding of the body. We&amp;#x27;re still discovering organs we didn&amp;#x27;t know we had: &lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;theoutline.com&amp;#x2F;post&amp;#x2F;851&amp;#x2F;scientists-identify-new-organ-in-the-human-body&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;theoutline.com&amp;#x2F;post&amp;#x2F;851&amp;#x2F;scientists-identify-new-orga...&lt;/a&gt;&lt;p&gt;It&amp;#x27;s entirely plausible to me that this has gone unnoticed for 200 years.</text><parent_chain><item><author>lr4444lr</author><text>Then what of the Italian scientist who noted them 200 years ago? All of those dissections and attention to research in the modern age and  it was actually taught in medical school that the brain had no lymphatic system? Seems a little far-fetched.</text></item><item><author>etiam</author><text>Kipnis made a mention of this in an interview closer to the actual discovery:&lt;p&gt;&lt;i&gt;As to how the brain’s lymphatic vessels managed to escape notice all this time, Kipnis described them as “very well hidden” and noted that they follow a major blood vessel down into the sinuses, an area difficult to image. “It’s so close to the blood vessel, you just miss it,” he said. “If you don’t know what you’re after, you just miss it.”&lt;/i&gt;&lt;p&gt;&lt;a href=&quot;http:&amp;#x2F;&amp;#x2F;neurosciencenews.com&amp;#x2F;lymphatic-system-brain-neurobiology-2080&amp;#x2F;&quot; rel=&quot;nofollow&quot;&gt;http:&amp;#x2F;&amp;#x2F;neurosciencenews.com&amp;#x2F;lymphatic-system-brain-neurobiol...&lt;/a&gt;</text></item><item><author>mysterypie</author><text>&amp;gt; &lt;i&gt;the team discovered lymphatic vessels in the dura, the leathery outer coating of the brain&lt;/i&gt;&lt;p&gt;Can someone explain why these vessels were never discovered during autopsies until now? Are they too thin, or transparent, or thought to have been something else, or the tubes become squished after death and therefore difficult to separate from other tissue, or what?</text></item></parent_chain></comment><story><title>Evidence of the body’s waste system in the human brain</title><url>https://www.nih.gov/news-events/news-releases/nih-researchers-uncover-drain-pipes-our-brains</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>dwringer</author><text>That reminded me of another example of this I remember seeing in the headlines; I&amp;#x27;m not sure if this [1] is the one I&amp;#x27;m recalling, but basically this is a similar situation for a different structure in the brain that was discovered in 1881 and then forgotten&amp;#x2F;ignored and omitted from medical texts for about a century.&lt;p&gt;[1] &lt;a href=&quot;http:&amp;#x2F;&amp;#x2F;news.stanford.edu&amp;#x2F;news&amp;#x2F;2014&amp;#x2F;november&amp;#x2F;mystery-brain-imaging-112014.html&quot; rel=&quot;nofollow&quot;&gt;http:&amp;#x2F;&amp;#x2F;news.stanford.edu&amp;#x2F;news&amp;#x2F;2014&amp;#x2F;november&amp;#x2F;mystery-brain-im...&lt;/a&gt;</text><parent_chain><item><author>lr4444lr</author><text>Then what of the Italian scientist who noted them 200 years ago? All of those dissections and attention to research in the modern age and  it was actually taught in medical school that the brain had no lymphatic system? Seems a little far-fetched.</text></item><item><author>etiam</author><text>Kipnis made a mention of this in an interview closer to the actual discovery:&lt;p&gt;&lt;i&gt;As to how the brain’s lymphatic vessels managed to escape notice all this time, Kipnis described them as “very well hidden” and noted that they follow a major blood vessel down into the sinuses, an area difficult to image. “It’s so close to the blood vessel, you just miss it,” he said. “If you don’t know what you’re after, you just miss it.”&lt;/i&gt;&lt;p&gt;&lt;a href=&quot;http:&amp;#x2F;&amp;#x2F;neurosciencenews.com&amp;#x2F;lymphatic-system-brain-neurobiology-2080&amp;#x2F;&quot; rel=&quot;nofollow&quot;&gt;http:&amp;#x2F;&amp;#x2F;neurosciencenews.com&amp;#x2F;lymphatic-system-brain-neurobiol...&lt;/a&gt;</text></item><item><author>mysterypie</author><text>&amp;gt; &lt;i&gt;the team discovered lymphatic vessels in the dura, the leathery outer coating of the brain&lt;/i&gt;&lt;p&gt;Can someone explain why these vessels were never discovered during autopsies until now? Are they too thin, or transparent, or thought to have been something else, or the tubes become squished after death and therefore difficult to separate from other tissue, or what?</text></item></parent_chain></comment><story><title>Evidence of the body’s waste system in the human brain</title><url>https://www.nih.gov/news-events/news-releases/nih-researchers-uncover-drain-pipes-our-brains</url></story>