We've been taking pictures for almost 200 years now, and we sure aren't slowing down. But how many pictures have we taken all together, since photography existed? Well the short answer is around 3.5 trillion, but there's a lot more nuance than just a flat number. Vsauce looked into the matter in more detail, and some of the facts might surprise you. How many of the pictures are actually good? That's anyone's guess. [YouTube]