Nothing left to discover or invent within our means, or do you mean that there is literally nothing left? If it's the former, we've hit a local maxima. If it's

Nothing left to discover or invent within our means, or do you mean that there is literally nothing left? If it's the former, we've hit a local maxima. If it's the latter, I don't think we could speculate what would happen in that situation. It's too alien.