Well ... no. Some guy back in the late 1930s tried doing it like that, he had bad hair and a tacky mustache, and look how HE ended up - badly barbecued after gulping down some cyanide.
About the only situation you will find in modern times where that might apply is in the captain of a naval vessel, "master alone before God" and all of that.
Otherwise, I tend to adhere to the philosophy, "An expert is someone who knows when to call in the experts."