In my opinion the biggest reason Excel is bad for data analysis is that it is just too easy to produce non-reproducible results. I had a boss once who knew Exc

In my opinion the biggest reason Excel is bad for data analysis is that it is just too easy to produce non-reproducible results. I had a boss once who knew Excel and thought he was good at data analysis, but he wasn't. I did most of the data analysis, and I used R. That was something he just didn't understand although I did explain it a couple of times. Things like version control, CI, R/Python for data analysis, all make sense to professionals but not necessarily to dabblers. Perhaps a dabbler in data analysis made this decision.