Zero point "energy" is a bit of a misnomer.
In everyday language, energy has the potential to do work. Zero-point energy has a role in physics, but is a theoretical construct built around the idea that it can do no work. That is to say, if the theory is correct, then zero point energy is not useful, and if the theory is incorrect, then it does not even exist. It is only "energy" under a very special use of the term.
It's difficult to talk about this stuff; Feynman is the only one who's really done so well, and partly this was by admitting from the get-go that quantum phenomena defy our
common sense. But I've had a few semesters of education in quantum mechanics, and am squarely in the "there's no free lunch" camp.
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Making seedballs was fun and easy, and it didn't take all that long to make a couple pounds. If I were using them in quantity, I would want to either have a machine, a group of people to socialize with while doing it, or some youngsters around to stack functions like child-rearing or education on top of the business of making seedballs.
I took a plastic bag out of my trash to mix things in, to avoid spreading dust or mud around. With intact clover seed heads, I found it took some mashing by hand to get the air out, to break up the seed heads, to get things well-stuck-together.
They dried really quickly on screens, up to about half an inch didn't take very long. They can drop from three feet onto
concrete and not shatter.
Pine needles got incorporated accidentally, but almost all of them fell out as the clay was rolled by hand.
"the qualities of these bacteria, like the heat of the sun, electricity, or the qualities of metals, are part of the storehouse of knowledge of all men. They are manifestations of the laws of nature, free to all men and reserved exclusively to none." SCOTUS, Funk Bros. Seed Co. v. Kale Inoculant Co.