Cognitive Revolutions

Mathematics is a an abstraction and it is best broadcast using mathematical notation (a form of writing).
The permanence of sand drawings seem to be the limiting factor here.
Excerpt: “To appreciate how revolutionary Ascher’s perspective was, consider that before her work and that of her contemporaries, scholars generally assumed that only societies with writing could truly practice mathematics. They constrained their investigations of mathematical knowledge to textual sources and ignored many other practices seen in societies with oral traditions that did not use a written language.“

On the efficacy of multitasking
Order is important. Better to perform tasks requiring lower activation energy before more demanding ones. Build into it. Switching is expensive.
Language is our way of giving legibility to ideas.
Only legible ideas survive.
An idea risks signal loss each time it is transmitted. A great idea survives the distance, becoming more legible the further it gets from the source. They survive the common sense test.
Great ideas also retain (or attain) legibility the longer they remain still. An idea at
... See moreReading habits. Book clubs?
Podcasts are more accessible and multimodal
newyorker.com • Why Computers Won’t Make Themselves Smarter

"Let no damned Tory index my History!” He knew that whoever controls the index controls how readers enter a work.”

Coordinating parts of society that are prone to disagreement creates room for variance elsewhere