[igravious]

By the way, I never said that I think there are too many humans on Earth. This is a populist viewpoint, and it is not one I share. Even with current technology I believe the Earth could sustain > 10,000,000,000 humans with the caveat that humanity recognises which activities are unsustainable and alters its collective behaviour possibly through regulation if people won't voluntarily change their lifestyles.

Examples: increased urbanisation, cutting meat consumption to increase the amount of land for crops, increased shared use of transport, assuming hydrocarbons and peat-bogs are semi-scarce non-renewable resources then transition away from them as sources of energy to renewables, travel less by using telecommunication, and so on.