Well, I think this guy explains an omnipresent issue about 4º density STS metabolism, and why they feed from negative emotions. He states that when an emotion is present, a potential diference is generated, and what he calls "balance forces" try to nullify this difference. This is the way a termodynamic engine, from a car or a rocket works, based on a "Carnot cycle" and under the 2º Law of Termodynamics. This is the reason we can not draw energy from the ocean heat. If you search the web for "stirling motor" you can get a cool toy that works from the temperature diference between your hand and the environement, as you hold it.assuming that there is some connection to Cs ideas, he seems to me to have done a generally decent job
So when you had whish, a difference is generated, what must be spotted in 4D as a beacon, an thus, exploited for feeding.
Pure intent is different because has not this savory ice cream cover associated, and no hungry 4D entities attracted to. A little boring compared to a strong wish.
So strong emotions are energy source in other realms, and this author gives us a clue.
Another amazing book from this forum.