Some numbers are simply indigestible. One of them is a quintillion. With eighteen zeros, it’s a number that is difficult to write, let alone to imagine. Yet every day we produce about 2.5 quintillion bytes of data: images, texts, videos, audios. To make it a bit more understandable, let’s assume it’s about 1.7MB per person per second. That’s a lot of data. What happens to it and why it really matters?