Originally Posted By: paul
breeder mode for essentially limitless supply


"essentially" means for somebody's expectation of practical uses. We can also say coal is an "essentially limitless source of free energy" We just dig it up and get energy from it. There's so much buried in the Earth that it'll practically never run out.

Nuclear reactions that produce more energy than they consume cannot leave their fuel in the same state it was in before they started. It always ends up with less energy available for further reactions. It'll always run out eventually.

Stop confusing "free energy" with "no cost energy". That's not what the term means, and I'm sure you know it.