Great performers understand that communication is an art and takes practice to refine. When Jay Leno was hosting The Tonight Show, he would leave the taping on Friday and head to Las Vegas or another city for a series of standup shows. Leno would do 100 to 150 acts a year even when he had a full-time job because he had to stay sharp. When is the last time you practiced any presentation 150 times, or even 20 times? Speaking of The Tonight Show, Jimmy Fallon rehearses his monologue in front of a live audience earlier in the day. He has a pen and paper in hand and makes notes of what gets a laugh and what doesn’t. These comedians do not rely on a scientific algorithm to develop their jokes.