You hear a voice in your head when you're reading, right?
If you think this is interesting, definitely read  &quot;Generalizing From One Example&quot; at Less Wrong [1].<p>Turns out that people have varying degrees of ability to mentally imagine things, where the range seems to be from &quot;purely abstract&quot; to &quot;number of stripes on a tiger&quot;.<p>Also; Feynman noted that people keep track of time in very different ways[2], either visual (imagining a clock) or symbolic (counting by talking to yourself inside your head).<p>And that whole internal monologue thing? Turns out that some people report not having that...<p>If anyone has more examples, please add them. This stuff is endlessly fascinating :)<p>[1]<a href="http:&#x2F;&#x2F;lesswrong.com&#x2F;lw&#x2F;dr&#x2F;generalizing_from_one_example&#x2F;" rel="nofollow">http:&#x2F;&#x2F;lesswrong.com&#x2F;lw&#x2F;dr&#x2F;generalizing_from_one_example&#x2F;</a><p>[2]<a href="http:&#x2F;&#x2F;generallythinking.com&#x2F;richard-feynman-on-thinking-processes-did-he-know-nothing-about-psychology-v&#x2F;" rel="nofollow">http:&#x2F;&#x2F;generallythinking.com&#x2F;richard-feynman-on-thinking-pro...</a>