I made a video about optimism, based on "The Beginning of Infinity," by David Deutsch (https://youtu.be/PiKU6Nm1p8E). The book dives into the endless potential of explanatory knowledge, describing how problems are inevitable but soluble.
As a YC founder, this book has inspired me to keep pushing my startup forward and I strongly recommend it to anyone interested in progress.
I'm posting the video here because there is probably no other place in the internet where someone would spend 5 minutes watching a video about NYC, surfing, and The Beginning of Infinity.