the.com/openings
The first move, the first impression, and the first chance to lose.
means The beginning moves or moments of something — a game, a speech, a job posting, or a physical gap.
from From Old English 'openian,' to make open; the plural drifted into meaning starting moves and available slots, because every gap is also an invitation.
Chess librariesNamed openings number in the thousands, all memorized.
Job adsAn opening is literally an unfilled hole in staff.
Writers fear itFirst sentences get rewritten more than any other.