the.com/comeback
Proof that the bottom is a launchpad, not a grave.
means A return to success, strength, or relevance after a decline, defeat, or absence.
from From the plain verb phrase come back; the noun sense of a triumphant return arrived in the early 1900s, fittingly making its own comeback as slang.
Second meaningAlso a sharp, instant verbal retort.
Sports gospelWhole leagues are built on improbable comebacks.
Built-in dramaRequires a fall first, which is the appeal.