Further to my post on Instagram, I find it important to post up a review of the book ' 21 Lessons for the 21st Century', by Yuval Noah Harari. This book has challenged my critical thinking paradigm because it contains a lot of postulations, hasty generalisations and sweeping statements which I found hard to agree with. However, having read many books, I personally find it important to conclude that there is a certain limit to the amount of opinion and assumptions an author can put in a book and the amount of information your readers or audience can process. As a general rule, you should not produce opinions on the basis of weak evidence, because you will have difficulty interpreting subsequent information that contradicts these opinions, even if this information is disproportionately more accurate. As Yuval writes his introduction, he asks some very intriguing questions like, “What are today’s greatest challenges and most important changes?" But, how do you distinguish b