Optimized gifting and signaling costs

Eliezer Yudkowsky’s original post on Neural Categories and hanging nodes.

Scott Alexander on Diseased Thinking and a longer essay Concept Networks.

The very worthwhile analysis on holiday gift giving reddit comment.

Google’s deep learning utilizes these sorts of networks. “The Great AI Awakening” discusses this at some length, and is Eneasz’s source for visual recognition software finding cats in youtube videos and The Hidden Watchers.

This Alien Shore is what inspired Eneasz’s face-tattoos, it contains a society where every morning people apply very elaborate face make-up to signal their interests, social status, careers, education, etc. Those who are very confident they won’t have personality shifts over time get them tattooed on.

TED talk by David Epstein regarding extreme body-types of the most elite athletes. Link starts at 6:00, but the first six minutes of the talk is about how new technology has led to record-breaking improvements in performance, which is also very interesting.