Announcements are both statements in their own rights and (sometimes) actions.
In the past, we've accepted "I do X" as an action, but we've also accepted "I hereby announce that I do X" as an action. Both, by Agoran Custom, do the Same Thing. The latter statement, conveniently enough, is true regardless of whether or not the action succeeds. If accepting the truth/falseness of actions based on their success/failure leads to different consequences for what appear to be terms of art in announcement style shows just how absurd taking this position is (or would be if codified). -Goethe