Steel wrote:You have not thought through your objection to EROEI < 1.
If the oil is going to be used in a car for example it only needs to beat the EROEI of whatever alternative fuel is available. For a concrete example consider that a current electric car has an EROEI of 0.3 at best, as batteries are that inefficient, yet they are not automatically worthless.
Even then, if the EROEI is still worse, if you need it to be used for some niche application where there is just one characteristic that it wins on (eg energy density) that makes it vastly preferable in certain applications (flight) then there is still a good reason to continue production/extraction.
I worded that poorly; that kind of thing was supposed to be covered under "some other purpose than 'get energy out of it.'"
For aviation, petrochemical fuel isn't just being used to "get energy," it's being used to get energy
from a high-density medium. If the EROEI on oil goes below one, that might still matter. But you'd never consider burning that same oil in a boiler to heat your house; it'd be more efficient to burn coal or gas, or to use electricity.
energiewende wrote:Simon_Jester wrote:The problem is: what is the impact on the economy when the derivative of the oil price, with respect to time, becomes very large? I submit that it would be arrogant and overconfident to assume that we can continue to model this in isolation.
I don't think it would, because if people anticipate large price changes in the near future they will buy/sell which tends to levelise the price. Current prices are an expression of estimated future supply and demand as well as current supply and demand ("speculation", if the price is personally inconvenient to you).
This is what in physics I'd call a 'damping effect,' which acts to neutralize rapid changes in the quantity we're looking at. The question is, are there limits on what the damping can do? Can the speculator market in oil futures keep prices changing slowly and smoothly in a predictable "oil is becoming rapidly harder to get and harder to get in quantity" scenario?
For instance, when food prices rise to the point where many people can't earn enough to eat, something's going to change.
That sort of thing won't happen. The price of food can increase far beyond any reasonable level due to fuel shortages and still remain affordable.
You are completely missing my point. Check your reading comprehension.
Food shortages are an
example of how a really large price shift in an essential commodity can cause nonlinear effects. Disastrous effects that are NOT covered under standard supply/demand simulations. But they happen anyway, because at some point the practical consequences of "commodity not available to X% of the population" causes something to happen that breaks the rules of a simulation.
Oil shortages may or may not cause food shortages. It doesn't matter, that's not the point. The point is that oil shortages might cause
something with unexpected secondary effects, or trigger
some unexpected positive feedback loop. Or cause some kind of equivalent of the permanent deformation of metal you see in an overstressed spring.
There are a LOT of candidates for how that might happen. And it is that which creates the fears about peak oil. That at some point, the supply will fail to stretch enough to allow slow, gentle changes in price. Instead we get rapid changes in price (much as food changes rapidly in price when shortages occur and can't be fixed in a hurry). And the rapid changes in price could have other effects besides "demand decreases haha."
A rapid rise in price would have no serious side-effects if we were talking about the price of chocolate or iPods; it certainly has such effects if we talk about food. Is oil more like the luxuries, or more like the necessities?
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One of my greatest complaints about economics as it is often presented by the laissez-faire is that they try to make economics out to be as precise a science as physics. Which isn't a bad thing, except that a physicist is willing to admit that there are limiting cases where his model of the situation breaks down. Real economists are or should be; the kind we get on political forums talking about FREEDOMARKETS so often aren't.