My hope is that if there are whole new levels of science that haven't yet even glimpsed, then the aliens using that science are so far advanced that we have no

My hope is that if there are whole new levels of science that haven't yet even glimpsed, then the aliens using that science are so far advanced that we have no hope of viewing the footprints they leave across the galaxy. Or perhaps that they have a very strict prime-directive-style zero-interference policy that they've built something that protects us from seeing anything out of the ordinary until we reach a certain level. It may be that such esoteric or advanced sciences can really mess up your local star system if handled poorly, so they want to keep immature hands away from the stove, so to speak. Neither of those possibilities really mean that we should be doing anything different regarding our peering into the cosmos. There's certainly wonders already in our view that are beyond anything we can really comprehend.