Friction determines frequency, leading to behavior inhibition or participation surge. Through system design, we should encourage efficient and positive behaviors while installing friction points along paths that lead to negative outcomes.
Levels of Friction — LessWrong
Scott Alexander famously warned us to Beware Trivial Inconveniences. • When you make a thing easy to do, people often do vastly more of it. …
https://www.lesswrong.com/posts/xcMngBervaSCgL9cu/levels-of-friction

Seonglae Cho