Knowing what you know and knowing what you don't know is true knowledge.
The "opportunity" to "meet" aliens is not just a little bit
At least 3,000 extraterrestrial civilizations are living in our "big home", the Milky Way, and there are so many of them that extraterrestrial explorers may not have to wait a lifetime for "seeing is better than missing". It is better to miss than to see" will eventually be their rational choice. Even in the "corner of the universe," the Milky Way galaxy, there are insurmountable distances between the homes of extraterrestrial civilizations that prevent humans and aliens from actually communicating with each other. A recent study shows that the chances of human-alien communication are extremely slim, and the possibility of contact across space and time is very rare. The diameter of the Milky Way is about 100,000 light years, and the speed of light is about 300,000 kilometers per second or 186,000 miles per second. A signal traveling at the speed of light would take at least four years to reach our neighboring planet, Ala Centauri, from Earth, and a signal traveling at the speed of light from one end of the galaxy to the other would take about 100,000 years.