[hx87]

I don't think people here (or anywhere) dispute that here is a hard upper limit on the maximum population the Earth can support at any given time. The dispute is in the proposition that population is fated (or probabilistically likely) to grow faster than agricultural production. That may have been true when pro-natalist dogma held sway and agricultural technology was stagnant, but that's no longer the case--people who advocate having as man kids as possible no matter are seen as crazy in most parts of the world today, and for good reason.

Birth control is likely and is effective if you don't try to actively suppress it.