Soldier that post is great!!
One must be able to recognize failure, failure can be very subtle. If you fail to get this message your body is sending you are at risk for injury. Failure is the inability to do another rep WITH PROPER FORM, not simply the inability to do another rep.
"When I see guys working out for cosmetic reasons, I see vanity exposing them in the worst way, as cartoon characters, billboards for imbalance and insecurity. Strength reveals itself through character." -Henry Rollins