He could also be a Jekyll/Hyde. We are talking about genetics. 2KFL is a mathematical equation and in the first edition of Dr. Jekyll and Mr. Hyde there were 138 pages.
Several people have mentioned 2KFL being an equation but I still don’t understand. What equation is it supposed to be a part of? I don’t recognize it. And I’m eager to know!
Gypsy actual dug that up but what I can tell you is that KFL means Kips (kilopounds) per Lineal Foot thus 2kfl. Best I can do as math/science was never my forte 🙂