You must not work with users often.

In the case of the accidental Hawaii missile alert, it was very poor UI to have basically hyperlinks almost beside each other for "drill" and "not a drill". But then

>Still, there is a second confirmation page as a safety measure, asking if the employee is sure they want to send the alert, which they also mistakenly pressed “yes” on.

I once had a user use their Outlook trash bin as their filing cabinet. Then she went to "file" some messages from her inbox without realizing she was already in the trash. Outlook pops up a warning saying that the messages will be irrecoverably deleted, she press "yes", then when she called me in a panic and I said "the computer did exactly what you told it to do", she told me "well what are you guys even here for"