I th...i...nk.... I see what you're getting at.
However, doesn't this negative EROEI (converting other fuels to oil at net energy loss) mean that the economy isn't just fucked, or fracked, but mega-felched?
Not to be a number dick or anything, but so we can all stay on the same numbers . . .
Real EROEI cannot go negative -- by the numbers, that is.
It is a Division Thing -- Not so much a Subtraction thing.
Energy Return (divided by) Energy Invested.
So for a claimed 100:1 -- you would get 100 units out for 1 unit put in.
And the other extreme -- maybe 1 unit out for 100 units put in -- would not be -99, but rather 1:100 or 1/100th. A rocket fuel process might give numbers like that. But since the rocket fuel would be very valuable, it would be a viable process.
But Heinberg -- the Post Carbon Institute guy that promotes all this makes THAT same basic math mistake. I was trying to legitimately use the number concepts and I came to realize he is just making the crap up.
He was the airhead promoting that the numbers could not go below 1:1.
About like the stoned Energy Czar guy.
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But back to your point about the money. Maybe think of this like pounds (weight) of material? Pounds returned for pounds given. So if we give a ton of sand (2000 pounds or so -- maybe $100) and get back 1 pound of Gold -- about $25,000, we could do that all day, every day.
Pounds Returned / Pounds Invested = 1:2000 -- An apparent loss.
BUT
$ Returned / $ Invested = 25,000/100 = 250:1 -- A massive gain.
Conclusion: It is MONEY that matters -- not Energy.