Over the years, it’s entirely possible I’ve made millions of mistakes. I’ve written checks for money I only imagined was there, mailed bills I've forgotten to stamp and stamped envelopes I’ve forgotten to mail. I’ve licked envelopes before including the check, and I routinely insert my invoices backwards. Once, I even mailed a sympathy card to new parents while the congratulations card went to a new widow. But in all those years, I don’t think I’ve ever accidentally written and mailed 230,000 checks. I’m pretty sure I would have noticed my little slip-up before I’d finished licking all those stamps.