conversely

With a reversed relationship.

If two parallelograms, which have one angle of the one equal to one angle of the other, be equal to one another, the sides about the equal angles are reciprocally proportional, and conversely.

Proposition I. If four quantities are proportional, the product of the extremes is equal to the product of the means, and conversely.

From another point of view; on the other hand.

At 123 yards, Royal Troon's par-3 eighth in the shortest hole in the Open Championship rota. Known as the "Postage Stamp," the eighth's distance has produced plenty of aces – most recently, Ernie Els in 2004, but Gene Sarazen's hole-in-one remains the benchmark, as the Squire accomplished said feat at 71 years old. Conversely, the hole is not a walk in the park.

So the issue of unification only comes up when the geometry can no longer be treated as a mere background, or conversely, when the classical theory is no longer accurate. But these circumstances exist (as far as we know) in only two places: the earliest moments of the Big Bang, and the immediate vicinity of singularities hidden behind black hole event horizons.