[scratching head]
If your purpose in buying a knife is altruism, then we should acknowledge that a Chinese worker is probably much more desperate to keep his job than is his American counterpart. The latter lives in the land of opportunity and, if he loses his knife job, can become a truck driver or a school teacher or a million other things. And if not those, then bountiful welfare is encouragingly laid at his feet, which provides him with free rent, free food, free medical care, a free cell phone, free education, free meals for his kids at school, and on and on. The Chinese worker who loses his job may very well be destitute. So if human decency is at issue, we should all buy Chinese knives.
I contend that instead, we should buy the best knife at the best price, or the knife that makes us happiest, irrespective of politics or social engineering or any other misplaced feel good-ism. If serving the public good is part of our calculus when buying knives or any other products, however, then we do the most good by not artificially inflating the value of poor or overpriced products, and allowing them to die a natural death in the marketplace. This does the most good for the most people, including both workers and consumers.
But I don't buy knives to do good. I buy them to cut stuff.