There is a good anecdote here: <a href="http:&#x2F;&#x2F;firstround.com&#x2F;review&#x2F;radical-candor-the-surprising-secret-to-being-a-good-boss&#x2F;" rel="nofollow">http:&#x2F;&#x2F;firstround.com&#x2F;review&#x2F;radical-candor-the-surprising-s...</a><p>I think excessive fillers betrays a lack of confidence in what the person is saying, so reducing will help you be a more persuasive speaker.