An extremely disgusting fungi
There are at least six of these things growing on this branch. Only one of them has opened, and now it looks like a lightbulb. The other ones look like tiny brains. It’s like a disgusting representation of being enlightened.
Even though the human brain looks nothing like this, and knowledge doesn’t make it expand like that, there are similarities between both things. Yes, you guessed it: they both have patterns. It would probably feel the same for a trypophobic to look at either one.