ok... i work at a knife retailer and had an argument with another worker about blade heat treatment. He states that EVERY decent knife (buck, spyderco, benchmade, any quality production piece) they only heat treat along where the edge is on the knife and that the spine is softer steel. So basically he says that they stick the ground portion of the blade into the heating machine of some sort thus only heating along where the edge is and not on the spine. This sounds ridiculous and even more time consuming than just heating the whole thing. Please, someone put this to rest?