In my view, we are going to achieve this goal instead through the combination of a free economic system with the emerging technologies of the twenty-first century. For example, by the 2030s, renewable energy technologies such as solar power will provide our energy needs at very low cost (we have 10,000 times more free energy hitting the Earth from the sun than we need, and the use of solar energy is expanding exponentially). Vertical agriculture consisting of AI controlled factories using hydroponic plants for fruits and vegetables and in-vitro cloned muscle tissue for meat, will be able to provide all the food we need at very low cost. Three-dimensional printing will provide the physical objects we need such as clothing, and modules to snap together a house for pennies a pound. Information-based technologies, including biotechnology and nanotechnology, will keep us healthy. Open source versions of all of these information-based products will be almost free. The financial economy will be based on proprietary forms of these information products allowing people to live very well with free open source versions. (2019) source Unverified