Blunt sarcasm rarely gets the laughs that subtle language and creative, crafty allusions do. While Jon Stewart, Bill Maher, Lewis Black, and numerous other political/deadpan comedians make us laugh by being sarcastic, there is more to it than just sarcasm. It is witty observation, combined with delivery. A written delivery cannot be varied to the degree that a stand-up comedian can vary theirs. Vocal delivery includes body language and tone, as well as facial expressions and atmosphere. Lewis Black is funny because he spazzes out. The closest you can get to spazzing out on a computer is by TYPING IN CAPS, or by EMPHASIZING words with various forms of TEXT FORMATTING. These are hardly impressive.