This is a very gentle introduction to the subject. The subtitle is inspired by university courses such as "Physics for Poets"! (if you're technically inclined, there's an alternate article for you.) It has been said that "The language of physics (or of God) is math". On a similar note, it could be said that: The language of the biological world - or of any subject or endeavor involving complexity - is networks ('meshes') What is a network? Think of it as the familiar 'friends of friends' diagram from social media. Everywhere one turns in biology, there's a network – at the cellular level, tissue level, organ level, ecosystem level. The weather and other earth systems are networks. Human societal organization is a network. Electrical circuits, the Internet, our own brains... Networks are everywhere! What can we do with networks, to better understand the world around us, or to create something that we need? Broadly s