It is that delicate balance between the creative, mind and the pure analytical logical side. I must admit the more pure logical thinking I use, the less artistic I become, when I am doing a lot of analytical work my knives tend to get rather straight forward and less fanciful; the two mindsets seem to be at odds.
However I think we were focusing on the optimum outcome for a using tool and maximizing the potential properties in the steel. If this is the case then we can all agree that heat treatment is the key, and with every steel having its own unique heat treating needs, if you don’t even know what steel you have in the blade nailing that process is simply not realistic. The guy who knows the chemistry in that blade and has the tools to tap precisely into will have you beat hands down, except of course in aesthetic or artistic quality, but then we are making tools not wind chimes.
Yes indeed, if I had a ton of free scrap steel that was all the same, I could work out how to properly treat it without an analysis. It would involve many hours of treating and testing with precise controls and my most valuable tool would be microscopic examination of the resulting structures (quick checks with brass rods, files and sawing on rope just wouldn’t cut it in my shop, no pun intended). It would consume vast amounts of time for me to be happy with the results. This is one more excellent reason for me to say that "free" mystery steel is the most expensive metal I could work with.
Not that other features and qualities cannot sometimes trump the pure performance aspect of things, as long as the smith is up front about things. I often use what I call “tootie fruity” damascus in my fittings. All the leftovers and odd scraps laying about my shop get mashed into these billets for the interesting visual effects they often give, and while I heat treat all my fittings as well, it is obviously not as critical and most wouldn’t expect a guard and pommel to be heat treated at all. But my blades are the business end of the knife, and I am nothing short of obsessive about the treatment and internal structure of that, you wouldn’t believe the things that keep me awake at night
But even at the blade level other qualities can sometimes trump the need for optimum physical properties. To keep my balance and sanity I have started making bloomery steel from raw ore, and while the resulting steel has no comparison to modern alloys it has a intrinsic value simply for what it is. I have yet to use any in a blade, but when I do it will be in a blade that is valued almost exclusively for its historical and traditional qualities, and I will certainly make it clear that the steel is decent but not the best in consistency and performance. To me if a smith is folding up unknown scraps of junk and then telling the world it is at the cutting edge of steel technology after their magic hammers are done with it they just plain being dishonest, either with themselves or others.