Think about it like this: the absolute vast majority of neutrinos pass through the whole planet without interacting with a single particle. One descriptive sayi

Think about it like this: the absolute vast majority of neutrinos pass through the whole planet without interacting with a single particle. One descriptive saying is that a neutrino can pass through 100 light-years of steel without interacting. This puts in context how hard it is to detect them (have them interact with your detector). So your communication turns into some random string of detections where you never know if the absence of a detection means there was no neutrino, or it was just missed.