A population that is overrepresented beyond sustainability will feel some sort of backlash (I think this is called the revenge effect). Is the human species collectively able to make the choice to stop an overall population increase before there is a revenge effect? If we were to suppose that all humans were capable of this trait, we would also be acknowledging something that (to my knowledge) has not happened in our evolution; an entire species choosing not to further increase their representation in the gene pool for a long term view of survival. This has been a consistent road block for me. • Ishmael.org, the work & philosophy of Daniel Quinn