Lately, I've been thinking about this a lot. Whenever I try to think of startup ideas, it feels like every obvious problem has already been solved. But then I come across startups solving problems I didn't even know existed. For example, I recently saw "Sampark" on Shark Tank India - a simple QR tag for your car that lets someone contact you if you've parked incorrectly, without revealing your phone number. Such a small problem, but once you see it, it feels incredibly obvious. ...