The result might well be a literal multiverse – thousands of virtual worlds, all different and distinct and economically independent. The human urge to explore, to colonise, to carve out a niche for oneself, does and will express itself in virtual worlds – and the scarcer such opportunities become in reality, the more prevalent it will become in synthetic spaces. In the absence of other countries and planets to colonise, we are simply building them for ourselves.—The Great Experiments