Comment Re:Of Course! (Score 1) 167
A tourist visiting a foreign country isn't even close to an equivalent interaction between beings that have, potentially, no common variables. Communicating with another human, even if you have no common language, can be done with gestures like eating - as you pointed out - but you can't do that for a being that you don't understand the biology of. Does the alien even need to eat? It might not have fingers and toes to count on. Establishing a baseline communication through mathematics *is* going to work, because (we assume) mathematics is our lowest level language for describing the universe around us. It might take a vast amount of time, but being able to teach them the notation for our mathematical system then allows for natural phenomena to be described in such terms and then those terms can be translated.
If an alien has no concept of our language or biology but can gradually understand our mathematical notation (even just starting with physical representations of addition and subtraction and then moving to more complex mathematical notation), it can then understand when we write a certain number that it represents light (because it is a constant), and then we can explain what our word for light is and start to develop and understanding of language around that word.
If an alien has no concept of our language or biology but can gradually understand our mathematical notation (even just starting with physical representations of addition and subtraction and then moving to more complex mathematical notation), it can then understand when we write a certain number that it represents light (because it is a constant), and then we can explain what our word for light is and start to develop and understanding of language around that word.