One company I worked at was making billion dollar decisions based on tools made in spreadsheets. It was the only option really, the instances where we did actua

One company I worked at was making billion dollar decisions based on tools made in spreadsheets. It was the only option really, the instances where we did actually have the bespoke tools we wanted were even worse! There is no way whoever made this felt they were avoiding programming though - this buggy, unmaintainable monstrosity was three-quarters VBA. I bet someone on work experience or an internship thought "I know how I can make this tedious manual process easier for everyone!" and (with the very best of intentions) created something that no-one down the line would ever be in a position to fix or update.