Why it is improbable there are highly developed aliens near or on Earth

The vastness of space: The universe is incredibly vast, with billions of galaxies and trillions of stars. Even if a significant fraction of these stars have planets that support life, the distances between stars are so great that it would be extremely difficult for any civilization to travel to other stars.

The time required for technological development: It took billions of years for life on Earth to evolve to the point where we could develop advanced technology. It is possible that other civilizations have developed more quickly than us, but it is also possible that they are still in their early stages of development.

The dangers of space travel: Space travel is dangerous, and even a highly developed civilization would be at risk of extinction if they attempted to travel to other stars. For example, they would need to protect themselves from the harmful radiation of space and the possibility of collisions with asteroids or comets.

The lack of evidence: We have not found any definitive evidence of extraterrestrial life, let alone highly developed aliens. This suggests that either such aliens are very rare or that they are very good at hiding their presence.

In addition to these reasons, there are also some theoretical physics arguments that suggest that it may be difficult or even impossible for life to evolve to a highly intelligent level. 

For example, some physicists believe that the laws of physics may impose fundamental limits on the complexity of life.

Even if life is common in the universe, it is possible that most civilizations destroy themselves before they can develop advanced technology. 

This is because civilizations face a number of challenges, such as war, environmental degradation, and technological disasters. If a civilization is unable to overcome these challenges, it may destroy itself.

This suggests that even if there are alien civilizations out there, they may be very rare. And if they are rare, it is unlikely that any of them are close enough to Earth for us to have contact with them.

Overall, it is improbable that there are highly developed aliens near or on Earth. However, it is still possible that such aliens exist, and we should continue to search for evidence of them.

Unlikely Buddha 2023