Garthinsandiego
Much discussion about tool edge wear and sharpening techniques here lately. Particular interest in the ease of creating and resulting durability of the unicorn edge profile for chisels and plane irons. The linked article discusses edge wear for razor blades. Wondering if the unicorn profile eliminates some of the cracks, thereby explaining the increased durability of that edge profile.

https://science.sciencemag.org/content/369/6504/689