Dropper posts: (Almost) everything you need to know

Jack Pittens is the co-founder 9point8, an Ontario-based bicycle component brand known for its dropper posts and other innovative products. How did 9point8 get its start? What is your background? For dropper posts, is there an advantage to using a sealed cartridge vs. one that's tunable, or another design? How do you make a dropper post lightweight? Do today's buyers even care about the weight of…