"No you can't" is a response to your statement "you can make any argument valid just by changing the meaning of the terms". I was making a technical logical point about the difference between validity and truth. When I make a point about logic on Medium, Most people respond by making a factual claim, which misses my point. I thought you were doing the same. Now I see you were trying to supplement my argument, not contradict it. Sorry if I misunderstood you.