<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>alexpotato</author><text>NASA has incredibly detailed records about every piece of their spacecraft down to things like:&lt;p&gt;- material used to make a bolt&lt;p&gt;- what the torque used to tighten the bolt was&lt;p&gt;- who tightened the blot&lt;p&gt;- when it was tightened&lt;p&gt;- etc&lt;p&gt;This allows them trace back through the history of each vehicle for debugging purposes.&lt;p&gt;They also applied this to the Space Shuttle software. This article from 1996 does an amazing job of describing the process: &lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;www.fastcompany.com&amp;#x2F;28121&amp;#x2F;they-write-right-stuff&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;www.fastcompany.com&amp;#x2F;28121&amp;#x2F;they-write-right-stuff&lt;/a&gt;&lt;p&gt;It&amp;#x27;s interesting how modern some of the practices described are. Plus, some of the practices (E.g. the bug rate model), from my experience, only existed there.</text><parent_chain><item><author>_zamorano_</author><text>So I suposse building an aircraft involves standard bolts, procedures, testing and much more standarized ways.&lt;p&gt;In contrast a spacecraft like the shuttle, faces much harsher conditions and, as not many of these were built, I expect more manual procedures and tinkering while building the thing.&lt;p&gt;In the end, it&amp;#x27;s incredible these things didn&amp;#x27;t crash more often.</text></item></parent_chain></comment><story><title>STS-93: We don’t need any more of those (2014)</title><url>https://waynehale.wordpress.com/2014/10/26/sts-93-we-dont-need-any-more-of-those/</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>rachofsunshine</author><text>The risk of spaceflight is still very high. Wiki [1] lists 676 people as having traveled to space, of whom 19 have died in accidents as a result of that travel, meaning that going to space has about a 3% chance of killing you.&lt;p&gt;The average age of an astronaut is 34 [2], and most are male, so a look at an actuarial table [3] tells us that going to space is approximately as likely to kill you as literally every risk an ordinary person would take in their life up to that point (at 34 years of age, about 4.3% of men have died, and a large proportion of those deaths are due [4] to accidental injury).&lt;p&gt;[1] &lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;en.wikipedia.org&amp;#x2F;wiki&amp;#x2F;List_of_spaceflight-related_accidents_and_incidents&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;en.wikipedia.org&amp;#x2F;wiki&amp;#x2F;List_of_spaceflight-related_ac...&lt;/a&gt;&lt;p&gt;[2] &lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;en.wikipedia.org&amp;#x2F;wiki&amp;#x2F;NASA_Astronaut_Corps#Qualifications&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;en.wikipedia.org&amp;#x2F;wiki&amp;#x2F;NASA_Astronaut_Corps#Qualifica...&lt;/a&gt;&lt;p&gt;[3] &lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;www.ssa.gov&amp;#x2F;oact&amp;#x2F;STATS&amp;#x2F;table4c6.html&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;www.ssa.gov&amp;#x2F;oact&amp;#x2F;STATS&amp;#x2F;table4c6.html&lt;/a&gt;&lt;p&gt;[4] &lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;www.ncbi.nlm.nih.gov&amp;#x2F;books&amp;#x2F;NBK600454&amp;#x2F;table&amp;#x2F;ch2.tab4&amp;#x2F;&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;www.ncbi.nlm.nih.gov&amp;#x2F;books&amp;#x2F;NBK600454&amp;#x2F;table&amp;#x2F;ch2.tab4&amp;#x2F;&lt;/a&gt;</text><parent_chain><item><author>_zamorano_</author><text>So I suposse building an aircraft involves standard bolts, procedures, testing and much more standarized ways.&lt;p&gt;In contrast a spacecraft like the shuttle, faces much harsher conditions and, as not many of these were built, I expect more manual procedures and tinkering while building the thing.&lt;p&gt;In the end, it&amp;#x27;s incredible these things didn&amp;#x27;t crash more often.</text></item></parent_chain></comment><story><title>STS-93: We don’t need any more of those (2014)</title><url>https://waynehale.wordpress.com/2014/10/26/sts-93-we-dont-need-any-more-of-those/</url></story>