Resources could become scarce if technologies are not used properly. If we keep using the current economic system of growth and environmental destruction, we could irreversibly destroy our habitat and fail to reverse climate change. If everyone on Earth can agree to overcome capitalism and declare the world's resources as the common ownership of all humans, as well as overcome our stupidities and differences, then we have a chance to appropriately use those solar cells, nanofactories, and all other fantastic technologies to provide resource abundance.