Here are a few of the most interesting things I've come across over the last few days:
Kyle Gibson on Fastball Efficiency and Pitch-to-Pitch Sequencing is a fanastic blog post on pitch sequencing which goes into some thoughts on ideal pitch sequencing as well as the realities of how pitches need to be sequenced in real game situations.
This tweet from Fermat's Library is a really cool visual math proof that should only take a few seconds to understand. It took me 20 minutes to figure it out.
Growing up and learning to play in South Korea is an intriguing article by former minor leaguer Eric Sim about growing up as a baseball player in South Korea. (If you think you spend a ton of time on your craft, let me give you a spoiler: you're wrong.)
The Physics of a Rising Fastball is a cool article by David Kagan at The Hardball Times about what it would take, by combination of velocity and spin, to actually throw a rising fastball and how (sort of) close some pitchers are.
The Way We Think About Charity is Dead Wrong is a great Ted Talk by Dan Pallotta about how the general views on what makes a good charity are dead wrong and how we can shift our thinking to help do more good.