"I'll tell you one thing, in what I do for a living, there's no substitute for experience. I don't care how much natural talent you may have... In the type of show I do, you can depend on surprises"

Bob Barker is emphasizing the importance of experience in his kind of work. He is recommending that no matter how much natural talent someone might have, it is not enough to be effective in his field. He is suggesting that experience is the key to success and that surprises are unavoidable. He is suggesting that no matter just how much preparation someone may have, there will constantly be surprises that can only be handled with experience. He is emphasizing that experience is the most crucial factor in his profession and that it is necessary to achieve success. He is recommending that no matter how gifted someone might be, they will not have the ability to manage the surprises that feature the job without experience.