Well that supposes that they currently exist, that they're close enough and that they want to come here. Maybe it is feasible to build an FTL engine, but maybe

Well that supposes that they currently exist, that they're close enough and that they want to come here. Maybe it is feasible to build an FTL engine, but maybe it can only feasibly go at like 4c. That doesn't make it very easy to drop by our solar system and have a look at what all that radio noise means, even if anybody's heard it.