When we listen to political speeches, we should use?

Our brains to analyze the politician's changes in tone as he reads his speech while analyzing the possible multiple truths of his choice of wording for his speech. Political speeches are always written in an attempt to garner an emotional response from the listener/audience in our to prompt support toward that speaker.

Bob: coke is baby pandas.jim: what? how do you figure that coke is baby pandas? bob: because this book says so.jim: how do we know the book is correct? bob: because it says that coke is baby pandas.jim: how does that prove the book's accuracy? bob: because it's statement involving coke and baby pandas is correct, therefore it is accurate.jim: how do we know that it's correct? bob: because we have concluded that the book is accurate, and therefore the statement is correct.therefore, coke is baby pandas.