I've been paying attention in the last couple of weeks to my grocery store receipts. Each market I tried had some error or another - always in the store's favor. At one, of all the items I bought, 15 percent rang up higher than the shelf price.
Each store explained this with a shrug - you know how computers are - even though this technology has been around for a long time.
Computer voting uses similar technology. But some computer voting machines don't now provide a paper "receipt." Concern is growing about unverifiable election results using computer voting machines. Right now Alaska's voting machines have a paper ballot for double checking. We need to keep it that way.