Primary Energy implies that the energy is a extension from one Primary source, that is, an extension from one root of a primary genealogical tree:
This sentence is a mess. You forgot to capitalize the "p" in "Primary genealogical tree".
Under a government which imprisons any unjustly, the true place for a just man is also in prison. Thoreau: Civil Disobedience (1846)
I have never met a man so ignorant that I couldn't learn something from him. Galileo Galilei
If there is no struggle, there is no progress. Those who profess to favor freedom, and deprecate agitation, are men who want crops without plowing up the ground, they want rain without thunder and lightning. Frederick Douglass
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