It’s life, but not as we know it. The oldest fossil ever discovered on Earth shows that organisms were thriving 4.2 billion years ago, hundreds of millions of years earlier than previously thought.
The microscopic bacteria, which were smaller than the width of a human hair, were found in rock formations in Quebec, Canada, but would have lived in hot vents in the 140F (60C) oceans which covered the early planet.
The evidence we’re getting is that life turns up just about as soon as it possibly can turn up.
My guess is therefore that the fl in the Drake equation approaches 100%. fi is lower of course as Wolverhampton proves.