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

He claimed that eighty percent of any outcome or phenomenon is actually the result of just twenty percent of the causes.

Then skim through the entire last chapter to grasp the overall message.

Break down the information into smaller chunks and organize them in a way that makes sense to you.

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.

Learning Languages

But the 80/20 rule works well with books that are purely data-based—for example, manuals and textbooks.

We can think of the eighty-five percent rule as the 80/20 rule when applied to failure itself, i.e., what’s the optimal level of failure if we want to learn more quickly and effectively?

Understanding this principle helps you identify the key inputs that have the most impact and allows you to focus and optimize them.