Rocketbook Wave smart notebook: What kind of sorcery is this?

Everyone loves shopping on Amazon, where you can find anything and everything you might be looking for. We were unaware, however, that Amazon sold black magic. That's the only explanation we can think of that would enable a product like the Rocketbook Wave Smart Notebook to exist. This unassuming 80-page book looks just like any other bound paper notebook. It comes with a Pilot FriXion pen that looks just like any other pen. Here's where things get creepy: when you've filled up your Rocketbook n