Walter owns a mobile car wash business that has been moderately successful. Although he lives in a town with many other car wash businesses, he has decided to open a brick$-$and$-$mortar location there too. He firmly believes his car washing services are vastly superior to those offered by the competition, and he is certain that he possesses above$-$average business knowledge. Therefore, he is not at all worried about the competition. Walter is demonstrating which bias?

Devil's advocacy

Anchoring

Uncertainty

Confirmation

Overconfidence