"One is the energy that a body possesses by virtue of being in motion, and the other is the energy possessed by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors." he answered without thinking too deeply as to how odd it was a reply. He was a man who thought now in formulas so the young man was lucky not to have been answered with a stream of letters, fractions and powers. That was partially the chemist in him as well as partially the alchemist. Formulas and symbols were invaluable to both, sometimes he felt it a shame that he could not simply communicate in lewis dot structures.
He pushed his glasses back up his nose to rest where they were supposed to remaining where he was. Even when the real Jonathan had been wandering around his glasses hadn't properly fit him then either. He meant to get them fixed but had simply run out of time. "I believe I grasp the basic concept, but I think I would rather continue observe if that does not unnerve you. I cannot recall if those of my years swing and would not like to sustain advanced-age-related injuries."
The man's memories of swinging were cloudy but not so hard that the brollachan inside of him couldn't interpret. Images were easy as were smells and the occasional bit of muscle memory but words didn't always come. "This is a form of amusement, isn't it? Playgrounds, children laughing and playing. Wanting to jump off from a great height or go fully around the bar in a three-sixty."