I think the definition of self sustainability is that you don’t need any orbital-class rockets. Afterall, earth humans got by for a long time without any orbit

I think the definition of self sustainability is that you don’t need any orbital-class rockets. Afterall, earth humans got by for a long time without any orbital class rockets. It’s really the sustainable supply machines needed to make air to breath and to grow food to eat that’s the main thing. You can’t eat or breath orbital class rockets. Rather, it’s the opposite test. As soon as Martians don’t technically have to care if they have any rockets, must mean they are fully independent.