the.com/improviser
Someone who treats a blank canvas as a dare, not a problem.
means A person who creates, performs, or solves on the spot, with no script and no net.
from From Latin improvisus, unforeseen — literally not seen coming, which is also the whole appeal.
Comedy rootsModern improv crystallized in 1950s Chicago theater scenes.
Sacred ruleYes, and keeps every scene from collapsing.
Not just jokesJazz, jamming, and quick thinking all qualify.