@thegibson In my pre-tech life, I worked inventory for a (now defunct) department store.

At some point, some bad Excel calculations (and general inexperience) led to me accidentally ordering millions of dollars worth of washing machines from one of our suppliers. Way more than we could ever sell in even a year. And the supplier refused to take them back.

Months later, when we were visiting one of our warehouses, I saw them: the endless towers of washers representing my mistake, taking up otherwise valuable floor space. My manager made sure that I noticed.

That manager sucked, the company went out of business (not because of me, but I'd like to think I had a small part), and I switched careers to programming. I've been doing far better now.