Wikipedia:Usual caveats

Notability can change, and subjects not now notable might become notable in the far-flung days of the Future.

The term usual caveats, in the context of deletion debates, refers to the idea that an editor's recommendation is subject to change if certain external events take place. These caveats are ways to hedge one's bet, so to speak – a subject might not be notable at the time of the debate, but may become notable later. This applies in many cases where the subject is young, is at the outset of their career, or where their activities just haven't yet received the coverage necessary for an article.

The purpose of citing these usual caveats in the deletion debate is to specifically note that the subject's notability may change in the future, and to specifically highlight (and support in advance) the idea that a new article would be welcome if and when the subject's notability changes.