`any` is infectious, a blackhole for type safety. You can accidentally pass values with `any` all over the place and TS won't complain, but it also won't catch

`any` is infectious, a blackhole for type safety. You can accidentally pass values with `any` all over the place and TS won't complain, but it also won't catch any mistakes you make. `unknown` is much more restrictive and you can't accidentally pass those values around without refining the type, it's much safer.