Truth! There's always a human element though... A previous employee of mine once accepted a $10 bill that turned out to be a $1 bill with a zero drawn in black

Truth! There's always a human element though... A previous employee of mine once accepted a $10 bill that turned out to be a $1 bill with a zero drawn in black marker on each corner of the bill by the ones. The store was insanely busy that day so I can kind of understand how she let it slip past her, but good grief.