You shouldn't let your excitement get the better of you.
Joe get's an email that says if he sends one thousand dollars to this account, they will send him back double.
Joe wants to make a good decision.
Joe thinks it through, researches online, and finds out this is a scam.
Joe is overjoyed and sends the money to the account.
Joe doesn't lose any cash and learns an important lesson.
Joe never gets anything in return and loses his cash.