I feel the (mathematically) like HAS evolved to our level or higher elsewhere.

We havent heard from them merely due to the vast distances involved.
The greater the distance, the longer it will take for something as primitive
as 'radio' transmissions to reach each other. Its just too far I think.

Once we get a Faster-Than-Light communications system figured out (IF possible),
then we will start hearing someTHING...