Is there even such a field as Theoretical Xenology? I would propose creating this possibly prone to pseudo
academic field with the sub-fields of:
▪theoretical xeno biology
▪theoretical xeno linguistics
▪theoretical xeno materials sciences
and so on and so forth. Do note this is not all as regards intelligent life, as I am ultimately actually much more interested in divergent evolutionary pathways and biology than our own. It only just occurred to me how in any possible human/alien interaction it is probable that a misunderstanding is going to lead to immediate violence in the off chance fear and greed doesn't. For example, when encountering intelligent life for the first time (or any life really) I think that a much more universal thing to do is to slowly and calmly squat down and sit in the lotus position with palms raised. This is or should be considered as the universal grating of "we come in peace" since any hand gesture is much more likely to be interpreted as threatening. This especially includes the "I've got my hands up I'm unarmed!" approach because you will look like this. Of course it is also highly dependent on things like their own articulation since Slav squatting could look like a predatory pounce.
I could only find this sadlyhttp://setiathome.berkeley.edu/forum_thread.php?id=58417
Also this should be a parallel fieldhttps://www.damninteresting.com/this-place-is-not-a-place-of-honor/https://www.forbes.com/sites/jamesconca/2015/04/17/talking-to-the-future-hey-theres-nuclear-waste-buried-here/
It would of course probably end up holding a lot of potential innovation in our earthly human fields too such as materials and technical sciences, culture media and the arts, and sadly also warfare such as tactics and weapons systems, whose design may also be inevitable.
Since language will be impossible with other life forms at least for a time this means we are going to be really almost entirely on body language and patterned energy or chemical emissions or (lack thereof) with everything including wild animals. As such I would think rural dwellers used to dealing with cross species signaling would have the advantage and one thing that would absolutely be fundamentally required for a center of learning or lab would be having things like cephalopods such as Cuttlefish and octupusim for urbanites to interact with as well as pirds such as parrots and ravens, jumping spiders, and ant colonies.
How could a space ship communicate? What would it communicate? Turning the lights on and off in sequences to indicate electron positions in sequence along the known periodic table to establish some kind of theoretical baseline for shared knowledge?