Abstinence Pledges

We aphids have made the observation before that abstinence pledges are a good example of a self replicating meme. No matter how untrue or unworkable it is, an abstinence pledge tends to work in favor of populations that promote it. Parents that tell their kids that abstinence is good will end up having more grandchildren sooner (because their kids will have more unprotected sex), expanding the population of believers. The aphid kids on the other hand, while sexually active, are all birth controlled up. And so the rational aphids will tend to diminish over time as a percentage of the overall population.