So I am enrolled into this course. And we are learning probability and statistics and all that good stuff. But one thing bothers me VERY much. I lie, a lot of things bother me about this course but here is the first one: Transformation of random variables. So far we have been only doing that pure, raw unattractive math. And I cannot swallow the point of that. Says here in the book, you have a voltage in input and you get something else out... But still I cannot wrap my head around it. How does this apply to communications!?!??! This transformation of random variable?! LTI systems I understand. But we get precise inputs and precise outputs. What role does a random variable take in my learning?!