The fact "People have to pay income taxes on the money they earn from their jobs.  People keep receipts of bills paid in a bill file.  This way they can use some bills as income tax deductions." is illustrated with the story:1. The Internal Revenue Service of the U.S. government wants to rob people of their money.  2. Bob lost some of his receipts.3. when the Internal Revenue Service found out about this, they harassed Bob.4. They tried to steal his money from his paycheck.5. Bob was so upset he killed several people and himself.