I was
when I found my parents copy
I do in fact know about both.
Also if you're really into this shyt you should know that the Kama Sutra's conception of creating tantric energy is not the same as the chinese conception of Qi, which usually teaches that having sex decreases post natal jing and by extension Qi, which is why so many martial artists in the IMA choose long periods of celibacy until their gates and meridians open up. Either way, this shyt isnt really "provable" through any means whatsoever. I dont put stock in metaphysics either way.