THOUSANDS OF YEARS AGO...
Remember the meaning-
not meant to be taken seriously or literally: a facetious remark.
facetious is a special talent of those practicing sarcasm. If your sarcasm meter went off at this point you can consider it working. If not, you may want to go to Amazon.com and purchase a new one.
As for the OP. Never thought about reading more and preaching less. You're that insightful idiot that just walked in the room to inform everybody of that new invention called the computer.
A LOT. I have practiced both quite a bit. Especially groin strikes. "Why" you may ask? Because at "all up in your grill" range they are outside your opponents filed of vision, can be delivered without obvious chambering movements and may cause great discomfort in proportion to the energy expended.
And yes, I have done the knee to the groin on "the streets". If was actually much more effective than I expected it to be. (One of several fights I've been in where I had to stop myself mid follow through because hitting them again would be redundant and cruel...)
Came for the Pankration rant. Left disappointed.