Would communication with a truly alien species be possible? What if an intelligent species evolved so differently from us that there is no way to even know of their existence, let alone communicate with them? Or what if we can easily detect their presence? What if they are as corporeal as us, but their minds are so different that they are as incapable of comprehending us as we are of them?

What would intelligence have in common? Curiosity? Can a potential for intelligent thought manifest intelligence without curiosity? Could curiosity be the only thing we have in common?