<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>ourmandave</author><text>That&amp;#x27;s the Mosquito Anti Loitering Device&lt;p&gt;&lt;a href=&quot;http:&amp;#x2F;&amp;#x2F;www.movingsoundtech.com&amp;#x2F;&quot; rel=&quot;nofollow&quot;&gt;http:&amp;#x2F;&amp;#x2F;www.movingsoundtech.com&amp;#x2F;&lt;/a&gt;&lt;p&gt;It a high frequency that only young ears can hear that sounds like the whine of a mosquito. Old ears lose frequency range so aren&amp;#x27;t bothered. It&amp;#x27;s not harmful, just annoying.</text><parent_chain><item><author>zapperdapper</author><text>Interesting one. I remember I went to the local One Stop with my son - he was about 15 at the time. He couldn&amp;#x27;t bear standing outside - he said the noise was unbearable. I said &amp;quot;what noise&amp;quot;?&lt;p&gt;Apparently they used some kind of sonic device that emits sound that can only be heard by teenagers, and it was incredibly effective - they wouldn&amp;#x27;t hang around outside the shop more than a moment longer than necessary. I do wonder whether it caused any damage though?&lt;p&gt;One Stop was later bought by Tesco and they got rid of it.</text></item></parent_chain></comment><story><title>US diplomats mysteriously go deaf, Cuba suspected of using sonic weapons</title><url>http://www.independent.co.uk/news/world/americas/cuba-us-diplomats-go-deaf-state-department-sonic-weapon-heather-nauert-donald-trump-raul-castro-a7885551.html</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>Chardok</author><text>&lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;en.wikipedia.org&amp;#x2F;wiki&amp;#x2F;The_Mosquito&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;en.wikipedia.org&amp;#x2F;wiki&amp;#x2F;The_Mosquito&lt;/a&gt;&lt;p&gt;Teens also have used this frequency as a ringtone in class as most teachers couldn&amp;#x27;t hear it.</text><parent_chain><item><author>zapperdapper</author><text>Interesting one. I remember I went to the local One Stop with my son - he was about 15 at the time. He couldn&amp;#x27;t bear standing outside - he said the noise was unbearable. I said &amp;quot;what noise&amp;quot;?&lt;p&gt;Apparently they used some kind of sonic device that emits sound that can only be heard by teenagers, and it was incredibly effective - they wouldn&amp;#x27;t hang around outside the shop more than a moment longer than necessary. I do wonder whether it caused any damage though?&lt;p&gt;One Stop was later bought by Tesco and they got rid of it.</text></item></parent_chain></comment><story><title>US diplomats mysteriously go deaf, Cuba suspected of using sonic weapons</title><url>http://www.independent.co.uk/news/world/americas/cuba-us-diplomats-go-deaf-state-department-sonic-weapon-heather-nauert-donald-trump-raul-castro-a7885551.html</url></story>