The famed aerialist the Great Zumbrati once walked a shaky tightrope across Niagara Falls despite a gusty wind that almost caused him to lose his footing. He was very relieved to have made it safely across. Waiting for him on the other side was a fan with a wheelbarrow.
"I believe you could walk back across pushing this wheelbarrow," the fan said.
Zumbrati shook his head and said he was lucky to have made it across without a wheelbarrow.
"But I know you can do it," the fan persisted. "Just give it a try."
Zumbrati shook his head again, but the fan kept after him.
Finally, Zumbrati said, "You really believe in me, don't you?"
"Oh, I do," said the fan.
"OK then," said Zumbrati, "get into the wheelbarrow and we'll start."