stevecook172001 wrote:clv101 wrote:ceti331 wrote:...my 'proof' is the empirical measurements - the actual number of recorded people who lived before fossill fuels were widely used - and the ongoing proof that most people require fossil-fueled activity to survive...
This is tricky though as there are huge variations. For example the 161 million people in Bangladesh use 0.2 barrels of oil per person per year. The good people of the USA use 23 barrels per person per year. That's a 100-fold difference.
So how much fossil fuel does it take to keep people alive? The inhomogeneity of the data make it impossible making any meaningful projections. The economic collapse of the US, halving their oil consumption would free up some 10 million barrels per day - that goes along way in poor countries (where most of the population growth is happening).
2 things:
Firstly, do you suggest that the world's population live like the majority of Bangladeshi's have to live?
No, I'm just saying that it very hard to make macroscopic energy and population comparisons when there's such huge variation in energy use per person within the dataset.
stevecook172001 wrote:Secondly, what do you think would happen to the Bangladeshi population if they had access to a little more energy? Do you think their population would fall or rise even higher., at least initially?
Their fertility rate isn't that high at the moment at 2.25 per woman having fallen rapidly from 7 per woman in the 1970s. Over the same period their energy use per capita has doubled from around 100kg of oil per year to 200kg. Over the last 40 years the population growth rate has slowed dramatically while the energy use has increased.
stevecook172001 wrote:All that a more equitable redistribution of existing resources will do in the absence of a population reduction program is slightly forestall a population collapse and, most likely, make it worse when it comes because, by that point, there would be absolutely no slack left in supply. All of which is not to say that I don't think that a more equitable redistribution is not desirable or morally right. It's just too late in the day, now, to think that will alone solve the crisis we are facing. We are too far down the road to hell for that. Indeed, in the absence of accompanying population reduction strategies, it would likely make the crisis worse as it will allow us to live unsustainably right up to the wire.
Population reduction program? The population reduction is in hand, the growth rate is slowing. The absolute growth we seeing for the next few decades is
mostly just the demographic lag - the population pyramid's sides are becoming more vertical. The best way to hurry this along is with better education (esp for woman) and better health care in the poorest parts of the world, with the highest fertility rates.
Bangladesh is a nice example here, fertility rates down from 7 to 2.25, as energy used increased from 100kg per person per year to 200kg - still more than an order of magnitude below America's.
On the other hand look at countries like Zambia and Ethiopia. These two countries haven't seen the same increase in energy use per capita, Ethiopa has flat-lined and Zambia has decreased. Their fertility rates? Zambia still 6.26, hardly fallen at all in the last few decades and Ethiopia still 4.2, down a bit but not nearly as much as Bangladesh.