Re: What an idiot
I generally agree with you, however on a technical point, if that external drive was an SSD of some sort, then deleting a file from it can be unrecoverable due to the way SSDs store data and possibly any TRIM functionality also.
But in that case, it is even more important to have a regular (not necessarily daily or even weekly depending on the frequency and amount of change, but certainly more than 'never') backup routine if you have valuable data.