Knife 'robustness' is much like tie widths. We have seen thin cutting stock like Moras to prybars like my old Adams Mark 4. Present thickness is somewhere in the middle.In survival we look for greater robustness because the knife may indeed be called upon to perform above and beyond it's dedicated purpose. That said, A few years past I indeed took my Adams and locked myself into an abandoned old trailor, or caravan.It took me the better part of a day to hack my way through marine plywood, insulation, aluminum and wiring. My hand from the rather unfriendly grips was a mass of blisters. I next picked a fight with a 4' palmtree and chopped it to pieces. Now, this is a 1/4" thick, relatively soft Rockwell tool. Finally I dug out a native onion growing in the irrigation gully of the orchard. I bent the blade. I couldn't cut myself falling on it roman like let alone basic survival tasks after this workout. It took a mil file to give even a working edge on what was left.It now had a distinct family resemblance to a anorexic kukhri. The final cut is this: Use your knife carefully and if possible in extremis fabricate a dedicated tool for non knife jobs. If your knife, and your hands are trashed doing vigorous work forget about fuzz sticks, a fire and cuppa tea. Thats one thing the people at Adams probably make right!I dug a hole for it and buried with full military honours, on the batlefield where it fell.