In many business contexts, it is actually acceptable to temporarily violate a constraint and fix it up later by apologizing. The cost of the apology (in terms of money or reputation) varies, but it is often quite low: you can’t unsend an email, but you can send a follow-up email with a correction. If you accidentally charge a credit card twice, you can refund one of the charges, and the cost to you is just the processing fees and perhaps a customer complaint. Once money has been paid out of an ATM, you can’t directly get it back, although in principle you can send debt collectors to recover
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