As developers, we sometime hear the advice to "go learn a new programming language every year". But why? In this talk, I will suggest that other than keeping up with current trends, exploring new languages makes us better coders in the ones we use today. You'll hear about our own experience at Riskified, where we found that working on greenfield Scala apps helped in levelling up our existing Ruby codebase. Come and get inspired about geeking-up and exploring new territories! Also, you might figure new ways to convince your boss that reading blogs and books at work is, in fact, time well spent!