I have no doubt that life exists on other worlds. What I dispute is the naive search for contact. There is no life form here on earth that is not predatory in some manner. That leads me to the conclusion that any life found would also be predatory. Sending our television and radio broadcasts out into space is foolish IMO. That space probe with all the 411 about earth and humans was like sending out a menu. IMO it will end up being our undoing.
We as humans have always thought of ourselves as special and worse than that protected by some invisible being. I just hope that whatever is out there doesn't find us tasty.
A few corrections: The radio transmissions are not "sent" they go out everywhere in all directions as they are "broadcasts", not direct signals "sent". They travel no different than the wind here on Earth, out in space. They just are, and have been since the first day of radio, then TV and now everything.
Of course they are "sent". Whether intended or not we are responsible for those transmissions being out there.
We basically, have a good thread within us, regardless of the bad, or we would not have survived for the last 1 million years≤≥, so, it tends to suggest we will also abide on our tomorrows.
Just as we would not be predatory (look at the plaque on the side of Voyager 1, heading out to the Orion Arm of our galaxy in a few billion years), it stands that whomever finds us, would also not be predatory in return.
The fact that we are not purely predatory is an accident of history. Hitler could have very well won.
In what way is our search or seeking for off solar worlds naive?
Our primary directive as it has always been is to survive as a species. Taking our eye off of that ball in the name of answering some questions is very naive indeed. Would you poke your eye up to the opening of a hornets nest "just to see what's in the hole"?
The SETI signal, operating in all bands, all radio waves, 24/7/365, broadcast a signal of code in alpha numeric that can be decoded by anyone that can receive it, says, "Hello, we are here. We are Human beings. We are located at (coordinates). Please acknowledge. Thank you."
A beacon, in the vast ocean of being alone, so far as we know.
Fittingly, along with this, is the words of Carl Sagan's "The Pale Blue Dot".
Clarify for us please on naive.
Seeking extraterrestrial life and assuming it is safe to do so is potentially the most dangerous endeavor we could be pursuing. If I am right ...we can still answer the questions that burn in you but lets do it at a safe distance. If you are wrong we could be extinguished startlingly rapidly and there may well be no second chance. Your curiosity risks too much. As in EVERYTHING.
Thank you.
Robert