I had an interesting conversation with a professional machinist about various types of steel and metal alloys, and metals in general, their present use and their predicted futures. His opinion and viewpoint was this regarding knives: I explained to him about such new steel like H1 and LC200N, S30V, and others that Spyderco collectors and users, as well as other knife users have been getting into, and he told me, that from the way he sees it, people ought to be content and satisfied with nothing more "exotic" than the 440 series of Stainless Steel, such as 440 A, 440B, 440C, that sort of thing, apart from the various carbon steel that is available. I explained the intense corrosion-resistance, hardness, and other aspects these other more new steel types have, and he acknowledged that, but holds firm to his view: He said there is plenty of knowledge and industrial framework for producing 440 stainless, and its a waste of time, energy and resources to develop these other specialty steel alloys. He then went on to tell me what he believes is far more vital and important for human industry and life, and that is the field of Pollution Control technologies. He proceeded to tell me (my paraphrase here): "Instead of spending time and money on new knife steel, engineers, machinists, and technologists, scientists should instead focus their efforts of new filters, machines, mechanisms, and devices that can clean the earth's water and air and stop side-reactions in chemical factories that create waste and pollution. Having clean air and water is a lot more important than new knife materials." He told me and I did acknowledge this one part: That steel is one of the most recyclable of all materials worldwide. I told him how I enjoy discussing these and other topics on the internet forum here, and he told me to relay this to you all and myself: That we need to focus more on how to make plastic and other water bottles clean in their manufacturing, than be focused on new knife materials. What would all of you say to this guy if you were to have that discussion with him? He is very intelligent and we had a good discussion but for some reason he just could not or would not really get excited about new types of knife steel and blade materials. He is free to his view, but I'd like your feedback on this.
Meanwhile, a second person recently gave me this prediction, and I'd like your views on this, as well: He predicted that advanced 3d printing will make more conventional stainless steel and carbon steel of high quality so cheap and abundant that no one will be interested in more exotic materials like carbon fiber or even advanced exotic "super steel".