This is a pretty good review of both books. Having read both books I'd say that if you haven't read Factfulness it is definitely worth it, indeed I'd say it's

This is a pretty good review of both books. Having read both books I'd say that if you haven't read Factfulness it is definitely worth it, indeed I'd say it's one of the best books I've read in years. It's interesting that this review concentrates on Pinker's views of various things, in particular the actual 'Enlightenment' and spends little time discussing much of the focus of Factfulness. Pinker's book is still worth a read, but perhaps after reading a book just on The Enlightenment. The central point of both books that the world has become much better over the past two centuries is really important.