"modern video media may shorten attention spans and distract from longer-form means of communication, such as written articles or books. But critically overlooked is its unlocking a form of mass-scale tacit knowledge transmission which is historically unprecedented, facilitating the preservation and spread of knowledge that might otherwise have been lost."

"Tacit knowledge is knowledge that can’t properly be transmitted via verbal or written instruction, like the ability to create great art or assess a startup."

"Before video became available at scale, tacit knowledge had to be transmitted in person, so that the learner could closely observe the knowledge in action and learn in real time"

"True autodidacts who can invent their own techniques are rare, but many can learn by watching and imitating."

"The scarcity of people who can truly learn from what they’re given is why the massive open online courses of the early 2010s didn’t work out, with 95% of enrolled students failing to complete even a single course, and year-on-year student retention rates below 10%."

"Learners who wish to acquire tacit knowledge, but who are unable to figure things out on their own, are therefore limited by their access to personal observation of skilled people."

"YouTube reports that searches in the “how-to” category has grown 70% year-on-year."

"The unflinching eye of the camera captures what experimental scientists might not know that they know, opening a window to distant collaborators. Through this mutual transparency, we can create a truly open science, going beyond current methods like preregistration and the sharing of source code and original data sets."

"But critically overlooked is its unlocking a form of mass-scale tacit knowledge transmission which is historically unprecedented, facilitating the preservation and spread of knowledge that might otherwise have been lost."

"This tacit knowledge is a form of intellectual dark matter, pervading society in a million ways, some of them trivial, some of them vital."

"Because of this intensely local nature, it presents a uniquely strong succession problem:"

"Further, tacit knowledge serves as an obstacle to centralization, as its local transmission provides an advantage for decentralized players that can’t be replicated by a central authority."

"Massively available video recordings of practitioners in action change this entirely. Through these videos, learners can now partially replicate the master-apprentice relationship, opening up skill domains and economic niches that were previously cordoned off by personal access."

"Search engines. Only a tiny fraction of the great mass of video content produced and consumed due to (1) and (2) is of value."