An overly-enthusiastic uber-questioning client bombs Hairtell and offers-up reams and reams of posts and counter-posts; all with the stated intention of "uplifting the entire profession."
...Nothing got uplifted, and not a scintilla of credible/verifiable information emerged.
I sincerely believe that Zapmyface has come to understand that the difference lies solely and exclusively in the HUMAN FACTOR. Neither the machine, nor the method, nor the type of needle are decisive in the final result. Now, thanks to him and his tests, we have discovered (at least I) that the strategy does not guarantee anything either.
For all this, I feel the need to apologize to Zapmyface in case my words have been able to offend you.