Learning Through Failure
A new study published in NATURE COMMUNICATIONS suggests that for optimum learning we should fail around 15% of the time. The researchers came up with the "85% Rule" after conducting a series of machine-learning experiments in which they taught computers simple tasks.
(The Eighty Five Percent Rule for optimal learning, Robert C. Wilson, Amitai Shenhav, Mark Straccia & Jonathan D. Cohen. 2019)