“Perception of knife carry” has has not largely “changed.” There has always been and will always be a certain segment of the human population that demonize the possession of an implement with a sharp edge. That perception is exacerbated by the seemingly-diminished need to have an edged tool in modern societies. Our food is often pre-sliced so that a fork is all that is needed to consume our meals. Shipping envelopes have a pull-strip that opens it when removed. Cardboard shipping containers only require a very small portion of the blade of a safety box cutter to open them. Fewer and fewer professions require the use of a sharp edge. The culinary industry uses the santuku-style knife without the sharp point. It’s ridiculous that a permit to conceal-carry a loaded firearm can still be obtained but not for a knife. Several years ago, I visited an office (it was in the UK) in which EVERYONE carried a loaded firearm. I was in the process of cutting my sandwich with my 2.5-inch folding knife when one of the residents politely asked me use the 8-inch kitchen knife sitting next to the sink in the break room instead.