<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>WA</author><text>Considering the tricks of palette shifting [1] and stuff that old computer and console games used to make computationally cheap animated backgrounds, does anyone know if there were computer games that used optical illusions for &quot;computationally super-cheap animations&quot;?&lt;p&gt;[1] &lt;a href=&quot;http://www.effectgames.com/effect/article.psp.html/joe/Old_School_Color_Cycling_with_HTML5&quot; rel=&quot;nofollow&quot;&gt;http://www.effectgames.com/effect/article.psp.html/joe/Old_S...&lt;/a&gt;</text><parent_chain></parent_chain></comment><story><title>Akiyoshi&apos;s illusion pages</title><url>http://www.psy.ritsumei.ac.jp/~akitaoka/index-e.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>JDGM</author><text>Absolutely superb. And I&apos;m doing an optical illusions special with my students this week too so this goldmine is perfectly timed. Thanks!&lt;p&gt;My favourite are the colour ones. I stare and stare at them trying to isolate the bit that - for example - is actually grey but looks red, to see its &quot;true&quot; colour. That level of concentration...not really ever seeing the grey, but perhaps objects behind me in the room flying around Matilda-style.</text><parent_chain></parent_chain></comment><story><title>Akiyoshi&apos;s illusion pages</title><url>http://www.psy.ritsumei.ac.jp/~akitaoka/index-e.html</url></story>