To appear somewhere is, increasingly, to be recorded as having appeared. An event of any standing, a gathering, an opening, a notable occasion, generates a record of who was present, and that record tends to outlast the evening considerably.

The recording happens in several ways at once. Those present are photographed, and the images are published or circulated. Guest lists exist, and are not always confidential. Coverage of the occasion names those who attended. Other guests mention it. None of this requires the person themselves to have published anything. Their presence alone was enough to place them on a record.

What such records establish is a person's movements and associations. To be documented at a particular occasion is to be placed at a particular time, in a particular city, among a particular set of people. A single such record is minor. A pattern of them, built up over years, describes where a person goes, what they support, the circles they move in, and who they are seen alongside. It is, in effect, a quiet itinerary.

For someone of standing this is easy to underestimate, because appearing at occasions is a normal and often expected part of a full life, and each appearance feels unremarkable. But the appearances accumulate into a record, and the record is searchable. A pleasant evening becomes a durable point of information.

This is not a reason to decline every invitation, which would be both impractical and a little joyless. It is a reason to understand that presence is now documented, and that appearances accumulate into a picture of a person's movements and company.

That picture forms part of what is visible about a person, whether or not they ever thought of an evening out as a disclosure.