What book, podcast, or YouTube video has changed how you think?

Welcome to the first Liotes Mission after the summer break.

We are consuming content in greater quantities than ever before in human history. From our own experience we know that some of this content leaves a deeper mark, the make us reflect and maybe change our way of thinking:

What book, podcast, or YouTube video has changed how you think? What effect did it have on you?

Please leave your answer as a comment below this post?

The Liotes Mission

By taking part in the Liotes missions, you can win credits that will help you to increase your score and your title in the Liotes Ranking.

People who submit an answer will get 3 credits for the Liotes ranking. If you submit more than 1 answer, you will not get more credits.

We are very grateful if you enter the challenge within 24 hours after the post is published. We will try to count entries up to 36 hours after publication.