"I mean, you're messing with something that could cause overpopulation," he said.
Most don't have permits to work - or even remain - in the country, causing overpopulation in a remote region where access to healthcare was already scarce.
To a very real degree, many of the issues bedeviling the Philippines can be traced to a single cause: overpopulation.
Darwin stayed with his freethinking brother Erasmus, part of this Whig circle and close friend of writer Harriet Martineau who promoted Malthusianism underlying the controversial Whig Poor Law reforms to stop welfare from causing overpopulation and more poverty.
You might want a pedigree, thinking you can enter it in beauty contests or show it off to your friends, or even breed it (which can cause overpopulation, so, beware!), but this isn't always the best choice.
The argument often circles back to the bet made in 1980 between the biologist Paul Ehrlich, who foretold catastrophic scarcity caused by overpopulation, and the economist Julian Simon, who argued that any short-term increase in resource prices caused by population growth will stimulate inventors and entrepreneurs to find new ways to exploit those resources, lowering prices in the long run.
Unneutered pets cause the overpopulation problem, and unneutered male dogs can be particularly aggressive in dog runs and on crowded city sidewalks.
The concept was to introduce a new lifestyle to guarantee people privacy, fresh air and gardens in order to resolve the issues caused by overpopulation in urban areas.
EXACTLY 200 years after Thomas Malthus predicted starvation caused by overpopulation and scarce food, Amartya Sen has won a Nobel prize for economics partly for proving that Malthus was wrong.
With regard to the population growth in the 'developing world', the replacement of traditional economies with cities is the cause of overpopulation and this has been made possible by modern transport.
