Anthropomorphic speculation

I have been pondering this and I have come to the conclusion that we might be a science project.

If I were a "supreme" being and I wished to play with creation, under the physical laws that were here when I got here, I might set up a solar system as my lab. Not from scratch but using one already well into the accretion process.

Being aware of the Goldilocks principle, I would set up maybe three planets as the objects of my interest.

My favorite, I would place in the warm sector. The building blocks of life that I will place on each world will thrive in this warm planet, where water will always flow and the primordial soup will always be warm.

The second would be the largest, further from the star and subject to more fluctuation in climate, but still a good candidate.

The last would be smaller, in a colder environment, The challenges would be greater but the harsher climate might create stronger more resilient life.

Then I sit back and watch. By my own rules I am not allowed to intervene in the process.

The warm planet is soon eliminated by unanticipated consequences and chance occurrence.

The second collides with a rogue planet and winds up with a large satellite.

The third progresses nicely and looks promising.

Finally, the second overtakes and passes the small cold planet which has blossomed and faded quickly in cosmic terms.

Voila we have Earth. Our supreme being writes a paper and moves on to more challenging things.