We need to find that sweet spot where things are just challenging enough.

The 80/20 principle can enhance your learning and retention by forcing you to focus on the most important information.

Essentially, the 80/20 principle is all about cultivating discernment.

Remember that originally, Pareto simply observed that land ownership was unequally distributed. However, this doesn’t mean that knowing this allowed him to predict who would be rich in the future and who would own land. It also told him nothing of why land was distributed that way, or how it might be changed. In other words, his law was purely

However, by applying the 80/20 principle and adopting a strategic approach, you can extract the most valuable insights while optimizing your reading time.

Prioritize and skim: Start by reading the conclusion or last chapter of the book to understand the author's main arguments or conclusions.

Fail zero percent of the time and it leads to boredom and stagnation.

These two examples show us that the 80/20 principle is a helpful starting point, but it’s really about helping us think more clearly about: What the most important task is What our absolute limits are What our goals are What our priority is—and what we don’t really care about

various learning algorithms perform best when the training error rate is around 15.87%, which translates to a training accuracy of approximately eighty-five percent.