Previously, scientists believed that life (simple single cell) started 700 million years after the earth cooled and oceans formed. New evidence has pushed this start date to 200 million years after the earth cooled. The earth formed 4.5 billion years ago. The earth was cool enough for life 100 million after at 4.4 billion years ago. Now, there is evidence that life started 4.2 million years ago.

The sun is changing and will make the Earth uninhabitable in 1.8 billion years.

The ratio of the life is easy to life is hard scenarios is statistically significant when the ratio is greater than 10.

The new numbers make the ratio about 15. Even if we are wrong about the latest date when intelligence life and when the earth is uninhabitable this ratio stays statistically significant.

Single cell life being easy means single cell life should be abundant in the Universe.

Abundant single cell life means that we have to figure out why there are not abundant advanced technological aliens that we have already met. It can mean that humanity should expect problems that could prevent us from expanding into the Universe.