Signal One is a free movie on Youtube that explores this idea along with the Dark Forest. I thought it was pretty interesting. One problem with the idea is tha

Signal One is a free movie on Youtube that explores this idea along with the Dark Forest. I thought it was pretty interesting. One problem with the idea is that not all aliens will be that advanced, and some of them should be detectable if they're that common, unless the super advanced aliens precluded their existence by being first.