You’ve got the a double negation there. (I.e. you said “don’t” and “irrelevant”, when presumably what you meant to express would either have the “don’t” and “relevant” rather than “irrelevant”, or would lack the “don’t”)
You are wording things very strangely (E.g. “principle of electromagnetic action”, “quantities of motion”). This greatly hinders communication. Are you able to say things in a more normal way?
My guess is you are asking why they believe that the substrate the algorithm is implemented in is irrelevant. This is by nature of what it means to implement an algorithm. The same algorithm implemented faithfully (by which I mean, implemented such that it runs correctly, i.e. as specified) will behave the same regardless of the substrate, because what it means for the algorithm to run correctly is independent of the substrate. If it behaved differently in a different substrate, in that it gave a different output, then it would not be performing/implementing the same algorithm, by virtue of what it means to be implementing an algorithm.
