It turns out that according to the latest data, the "Habitability Index" for the Earth itself was 83% and not 100% as previously thought. If hypothetical "brothers in mind" tried to estimate the likelihood of the emergence of life on earth in this way, the results of the research might not be in favor of earthlings. It's all about the proximity of the Earth to its sun.
According to Rory Barnes, an astronomer at the University of Washington, for aliens observing our planet from other star systems, such proximity to the sun means that the planet is too hot for living organisms. And if you do not know that there are forests and oceans on Earth, we can assume that the Earth is a lifeless desert scorched by the sun.
The Habitability Index was developed by a group of scientists led by Barnes. For its calculations, a large number of factors are used, such as: the level of radiation, the likely composition of the soil, atmospheric pressure, and others.
Based on the results of calculations for different objects, scientists determine which celestial bodies are more adapted for the emergence or presence of life. Probably, if for the Earth the "Habitability Index" does not speak about 100% existence of life, then it is possible. for other planets, the calculations are underestimated.