What a buying window is not

A buying window is a claim that something changed at a specific company on specific dates, and that the change makes a specific problem somebody's job. It has a start, an estimated end, and a list of the events it rests on. If any of those are missing it is not a window.

It is not a fit score. Fit is about whether a company could ever buy. A window is about whether now is different from last quarter. Most targeting collapses the two and then wonders why a perfect-fit list does not reply.

It is not website intent. Someone from a company visiting your pricing page is a strong signal and a completely different one, It is about your product, it happens after they have started looking, and it does not tell you why. This system is looking for the change that happens *before* anyone starts looking.

It is not permanent. A window that opened nine months ago has closed, whatever the score says, which is why recency here is a decay with a sixty-day half-life rather than a filter. A nine-month-old signal scores under 0.05 And should.

And it is not always open. The honest answer most weeks, for most companies, is that nothing has changed. A system that always finds a reason to send is not detecting anything, It is generating justifications. Under 0.50 Confidence this one says "loosely related changes, no clear transition" and spends nothing.