Answer 1: Three- one to ideate, one to innovate, and one to determine if we actually do have light.
Answer 2: None- the major advance in light was the discovery of fire and nothing new is going to happen in bulbs so we’re moving onto transcendental luminescence.
Answer 3: One, but only once. This new bulb doesn’t blow.
I’ve learned that if you ask the light bulb question and don’t get all three answers, an innovation team doesn’t have a sufficiently broad set of views.
Inevitably, that means you leave money on the table.