Ronnie goes to his lawyer, Mr. Shark and complains, "My neighbor Bonnie owes me $300 but does not intend to return it. Is there something I can do to recover it?"
Mr. Shark asks Ronnie, "Do you have any proof of the transaction?"
"No", replies Ronnie.
Mr. Shark advises, "Well then, write a mail to Bonnie asking him for the $600 he owes you."
Ronnie says, "But he owes me only $300!"
Mr. Shark replies, "I know. That's what he will write back to you and that will give us the evidence we need."
Mr. Shark asks Ronnie, "Do you have any proof of the transaction?"
"No", replies Ronnie.
Mr. Shark advises, "Well then, write a mail to Bonnie asking him for the $600 he owes you."
Ronnie says, "But he owes me only $300!"
Mr. Shark replies, "I know. That's what he will write back to you and that will give us the evidence we need."