Do you ever buy a product and it just feels like such a good idea that it should have been popularized a long time ago? For example, i bought a knife which comes with a sheath with a sharpener inside so that you can store in a drawer without worrying about cutting yourself, and it's always amazingly sharp.
@bkardell my gut says there's some advancement in materials science that makes that one work.
Not all advances are in computers, even if we tech folks forget sometimes 🤣