Kai Oelfke is a developer, maker, traveler, and volunteer based in Berlin, Germany. He is interested in technology, entrepreneurship, stoicism, minimalism, fasting, and sports. Kai has traveled to over 60 countries and enjoys couchsurfing and hosting travelers. He is also interested in pragmatic philosophy and practices stoicism. He enjoys running and cycling, and practices intermittent fasting. Kai is passionate about making things and tackling problems, and believes time is the most valuable resource.