I like the half-life of knowledge a lot, but it should better take into account that using your craft actually improves what you know. This half-life is more a thing for stuff you never use in your life. And is there anything good to remember things that have no use for you? It's just wasting space in your head.
So having your skills expire after a while might actually be a good thing.
This is so stupid on so many levels, I don't even get silicon valley engineers can envision this stuff for their own kids. Or maybe they don't care. Whatever.
Well, being a "pathological pragmatist" one could have thought that he would advocate to lower gun violence by getting rid of the guns, rather than trying to demonstrate that people who live in nice and clean places are magically less violent.