Humanity is the only species on Earth to have developed knowledge. I will make the term ‘knowledge’ increasingly precise as we go along, but for now I will simply say that we are the only species that is able to read and write, and that this ability in turn has allowed us to create increasingly powerful technology. Technological advance has the effect of broadening the ‘space of the possible’: for instance, with the invention of the airplane, human flight became a reality. When the ‘space of the possible’ is broadened, it brings with it both good and bad capabilities. This duality of technology has been with us since we learned to start a fire, the very first human technology. With this discovery, it became possible to warm ourselves and cook, but also to burn down forests and enemy villages. Today, the Internet broadens free access to learning, but it can also spread hate and lies on a global scale.