Levenhock's number of 13.4 billion is frightening. The world might sustain that many, if could maintain consumption. Today, some funny dynamics in population. Europe is in decline. Where woman are not receiving education, birth is booming.
People have no idea of how many people.
Giving a dollar, versus giving information. Also addictive versus non-addictive needs, e.g. power Not all addictive needs are harmful. Science may be an addictive need, but not harmful. If the addictions become wholesome addictions, then the human psyche can be redirected.