On Slate Star Codex (previously), Scott Alexander breaks down Invisible Designers: Brain Evolution Through the Lens of Parasite Manipulation, Marco Del Giudice's Quarterly Review of Biology paper that examines the measures that parasites take to influence their hosts' behaviors, and the countermeasures that hosts evolve to combat them.

GPT-2 is Open AI's language-generation model (last seen around these parts as a means of detecting machine-generated text); it's powerful and cool, and Gwern Branwen fed it the Project Gutenberg poetry corpus to see what kind of poetry it would write.

Ketamine is a sedative first synthesized in 1962; its patents have long elapsed and it costs pennies; it has many uses and is also sold illegally for use as a recreational drug, but in recent years it has been used with remarkable efficacy as a treatment for a variety of disorders, including depression, anxiety, and chronic pain (I have lifelong chronic pain and my specialist has prescribed very low doses of it for me at bedtime).