The bit about logic was mostly in response to the previous article that argued that we shouldn't use Null because logic doesn't have Null. But that's not true.

The bit about logic was mostly in response to the previous article that argued that we shouldn't use Null because logic doesn't have Null. But that's not true. This author is ultimately making the point you are making, which is that there's a concept that every programming language has to grapple with. Some call it Null. Some use more formalized means.