http://www.jimwagnertraining.com/homelinkboker.html
"You won’t see a blood groove on any tactical folder knives on the market, until now that is. The Jim Wagner Reality-Based blade does not just have one blood groove, but two one side of the blade. Blood grooves, or a fuller as they were called before the 20th century, are typically found on military bayonets and some swords to lighten the blade by 20% to 30%, yet keeping its structural strength. Many believe that a blood groove allows blood to flow from a stabbed person to alleviate the suction effect or clenching of the muscles around the trapped blade, thus making it easier to withdraw the knife from the wound.
On the same side of the blade where the blood grooves appear one can’t help but notice a silver line that is 3 centimeters rear of the tip. This 3 cm mark is what I call “a conversation piece.” As mentioned before a puncture wounds 3 centimeters, or 1 ¼ inch, or deeper can induce a phenomena known as instantaneous shock. It doesn’t mean that the victim is instantly going to pass out, but there is a strong possibility that shock can come about instantly or even minutes later, even if it is only passing out for a few seconds. The mark is merely for the owner to understand this phenomenon and to visualize the length of 3 centimeters. It is obviously not a visual marker to be looked at while engaged in conflict. The goal in any real conflict would be to shove the blade in as deep as it goes if a penetration is required. The 3 cm mark is for
educational purposes only."
other than this obviously idiocy I'm fine with this knife