Is There a Difference Between a Sign and a Silence?

Lying requires a counter factual. If i'm going to represent something as it is not, i have to understand that i'm trying to fool you. It seems like animals do try to hide things or thea they faint. I don't know exactly how to analyze that in a sophisticated enough way of processing signs that doesn't run into being symbols. That's what casser adds on top of what we've been saying here: To talk about possibility, you need symbols.