These Neo-Neolithic knives were designed by Matthias Kaeding. They are meant to reference ancient stone tools, with the modern consideration of material and design.
There is no doubt that ceramic knives are the best. They can be sharpened to a finer degree and will hold an edge better than metal. Metal knives, develop what is called a wire, where the metal on the edge wears into a ribbon, that reduces cutting ability. Where as ceramic knives don't wear.
The real question is the handling. Can a knife like this be used as well as a modern knife? I will admit that I am pro-evolution. In that, I believe that things have evolved (Like handles on knives) happen and become the standard, because they work better that previews variations.
Still an interesting object.
I must thank Mrs. Rose, because she found these.