<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>anthony_romeo</author><text>I love this. I&amp;#x27;ll be signing up.&lt;p&gt;Just one thing, browsing by topic doesn&amp;#x27;t seem to have any sort of rhyme or reason in its ordering aside from some vague first-letter ordering. For example, there are numerous &amp;quot;I&amp;quot; categories, with one &amp;quot;I&amp;quot; for &amp;quot;interactive&amp;quot; and another one for &amp;quot;Interactive&amp;quot;. One grouping of &amp;quot;I&amp;quot;&amp;#x27;s includes tags &amp;quot;ios&amp;quot;, &amp;quot;iOS&amp;quot;, and &amp;quot;ip&amp;quot;, but the next &amp;quot;I&amp;quot; grouping below just contains &amp;quot;IP&amp;quot;&lt;p&gt;Edit: I see the ordering issue now. There&amp;#x27;s a list of topics. The list is printed out in alphabetical order. But for some reason when the first letter of a topic changes between capital letter and a lowercase letter, a new letter grouping is created. Probably it&amp;#x27;s creating a new category whenever the first character changes, but it did not take into account capital and lowercase characters being different.</text><parent_chain><item><author>okal</author><text>I built &lt;a href=&quot;http:&amp;#x2F;&amp;#x2F;hackershelf.com&quot; rel=&quot;nofollow&quot;&gt;http:&amp;#x2F;&amp;#x2F;hackershelf.com&lt;/a&gt; just for this. It&amp;#x27;s a crowdsourced listing of legally free books on just about any topic.</text></item></parent_chain></comment><story><title>Ask HN: What are your recommended reads that are available for free?</title><text>I recently stumbled across a link in another thread to &amp;quot;Economics in One Lesson&amp;quot; and thought it was incredibly interesting.
https:&amp;#x2F;&amp;#x2F;mises.org&amp;#x2F;sites&amp;#x2F;default&amp;#x2F;files&amp;#x2F;Economics%20in%20One%20Lesson_2.pdf&lt;p&gt;What are some other interesting reads—whether PDF, website, doc, etc—that are freely available?&lt;p&gt;One of my favorites that I find thought-provoking is the &amp;quot;Procedural Content Generation in Games&amp;quot; book (http:&amp;#x2F;&amp;#x2F;pcgbook.com&amp;#x2F;).</text></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>crshults</author><text>Thanks for this. I was happy to see &amp;#x27;Patterns for Time-Triggered Embedded Systems&amp;#x27; on your list, though the link appears broken - new link: [1]. I remember working through that book and porting everything from C to Assembly (my boss at the time was too cheap to buy me the nice Keil compiler). Once I had that library in hand, I was knocking out his projects in days instead of weeks.&lt;p&gt;[1] &lt;a href=&quot;http:&amp;#x2F;&amp;#x2F;www.safetty.net&amp;#x2F;download&amp;#x2F;pont_pttes_2014.pdf&quot; rel=&quot;nofollow&quot;&gt;http:&amp;#x2F;&amp;#x2F;www.safetty.net&amp;#x2F;download&amp;#x2F;pont_pttes_2014.pdf&lt;/a&gt;</text><parent_chain><item><author>okal</author><text>I built &lt;a href=&quot;http:&amp;#x2F;&amp;#x2F;hackershelf.com&quot; rel=&quot;nofollow&quot;&gt;http:&amp;#x2F;&amp;#x2F;hackershelf.com&lt;/a&gt; just for this. It&amp;#x27;s a crowdsourced listing of legally free books on just about any topic.</text></item></parent_chain></comment><story><title>Ask HN: What are your recommended reads that are available for free?</title><text>I recently stumbled across a link in another thread to &amp;quot;Economics in One Lesson&amp;quot; and thought it was incredibly interesting.
https:&amp;#x2F;&amp;#x2F;mises.org&amp;#x2F;sites&amp;#x2F;default&amp;#x2F;files&amp;#x2F;Economics%20in%20One%20Lesson_2.pdf&lt;p&gt;What are some other interesting reads—whether PDF, website, doc, etc—that are freely available?&lt;p&gt;One of my favorites that I find thought-provoking is the &amp;quot;Procedural Content Generation in Games&amp;quot; book (http:&amp;#x2F;&amp;#x2F;pcgbook.com&amp;#x2F;).</text></story>