A tangled mess often called a 'mind', somewhat correlated to a sort of evolved ape (or so they say), processing stimuli and pouring the output in a stream of characters nigh intelligible yet suggestive of some sort of sense or reason lurking somewhere behind the cacophony of pointless ruminations.
A few years of screen abuse, a toxic relationship with nameless strangers on a mesh of wires called the internet, an unhealthy outlook on the world mediated through propaganda from all flanks and not a few heavily biased ramblings from untrusted sources.