Humor is richly rewarding to the person who employs it. It has some value in gaining and holding attention, but it has no persuasive value at all.
“I look forward to their convention and look forward to hearing the President talk about what he will do for the next four years. He hasn't done it up to this point.”
“General relativity is the cornerstone of cosmology and astrophysics. It has also provided the conceptual basis for string theory and other attempts to unify all the forces of nature in terms of geometrical structures.”