My god, you are very, very arrogant. The capacity of the world to produce food today is perhaps 10 times the current output.
And yet we have people starving. over 25 thousand children starve to death every day. We produce a lot of food, but our distribution is inefficient. There is no reason to suspect that will change.
Yes. I am very very arrogant. That is because, lets be blunt, I know more than you. I have the luxury of being arrogant.
How billions are going to die from hunger if food production will only correspond to 2-3% of the resources that the global economy will need to allocate to it by 2050?
Because there is more to food production than throwing GDP at soil.
. However, I don't think that these problems will be very important.
That is because you are an idiot. You have no rational basis or expertise upon which to base this opinion.
It appears that pessimist here is connected to ecological problems.
Have you noticed that most of the people being pessimistic about said ecological problems just so happen to be the boards biologists? Gee. I wonder, could that be because we are in a position to know what those ecological problems are, while you are not?
And, btw, the world's population is stopping to growth because people are having fewer babies.
I am aware. The question is, will it be fast enough? The answer is no, unless you can get the world population growth down well below replacement. We dont have discrete generations like mayflies. Long human lifespans will carry population increases into the next century unless we get our growth rate down that low very quickly.
. Global population will stabilize in 8-9 billion, not much above today's 7 billion.
Which just so happens to be within the upper range of what our carrying capacity is. Long term, I would say our carrying capacity is closer to 4 because the advances of the green revolution were temporary to one degree or another.
I tell you, world's GDP would have to decrease several time before we have mass famines again.
See above.
You are using current prices for food in order to justify the idea that we wont run out of the stuff. As I said that is a poor metric because throwing GDP at soil does not fix the problem. As agricultural problems increase, food prices will skyrocket, and people will starve. Their current per capita income has nothing to do with that. You commit non-sequiters faster than catholic priests rape altar boys.
Well, we can grow food in the hydroponic farms.
Hydroponic farms the size of countries. Good luck with that numbnuts.
Well, today the world's GDP is 70 trillion dollars, to buy food to make one person alive for a year costs around 1 thousand dollars (maybe about 600-700 dollars, but let's be pessimistic and assume 1 thousand)
Wait... so you are using current food prices to calculate what it will cost to feed the world's population when said food becomes more expensive.
Are you fucking high?
By 2050 the world's GDP will be in the 250-350 trillion dollars range, with a population of 9 billion.
Has a statistician ever told you why interpolation and extrapolation in complex systems is bad?
Even if ecological disaster makes food prices increase 10 times, with 90 trillion dollars (25-35% of the gdp) would be possible to feed the entire world. And food prices will not increase 10 times in the next decades... They will probable decrease....
Certainly, I am going to take the layperson's advice on matters of biology and population dynamics
We have 25 thousand children die every day, on average, right now. How bad do you think it will be when food prices do go up? Have you considered that?
I ask you: Why did food prices rise in 2008? It was because food production decreased?
No, it was because China is starting to eat meat!
And needs grain to feed it's cattle.
Take a look at the graph I posted earlier in this thread. The one that shows per capita cereal crop production decreasing.
If energy becomes more expensive, people will use less. The US uses several times the quantity of energy they need, but they use not because their economy "needs" energy: Most energy in the US is used at home. If energy becomes expensive, the economy adapts and consume less. Also, if energy becomes more expensive, then it becomes profitable to develop alternative sources of energy.
That consumption of energy you flippantly handwave away is what drives economic growth. It drives construction, industry, transportation, and the same substance (petroleum) is used as a building material, and forms the basis for many fertilizers and pesticides.
In other words, a statistician needs to tell you why interpolation and extrapolation is bad.