How does Elm undo a charge to my credit card if I change my mind 2 minutes later? How does Elm un-print a document if I decide I didn't want to print it after a

How does Elm undo a charge to my credit card if I change my mind 2 minutes later? How does Elm un-print a document if I decide I didn't want to print it after all? How does Elm un-send the email telling a person they were fired if I decide I misspelled the recipient name? How does Elm help the Linux kernel undo a write operation to write-once media? How does Elm help a payroll system undo ACH transfers to thousands of employees? I feel like you mostly missed the OP's point.