Oh, I 100% agree with you, having been in a similar situation. It only happens once, then you learn to carry an extra set of clothes in your carry-on (when travelling internationally).

My point is just that 1% is a pretty reasonable margin of error. If I worked on a team with 1% or less of errors over a life of a project, I'd be ecstatic. But, reality prevails. Email/Gmail, websites, cell networks, car accidents with hours of waiting, etc. all happen. Usually, only a small number are affected (or for a small duration).