Definitely this. When software silently thinks it knows what I wanted and silently does the wrong thing, sometimes you find out a long time later, and it ends u

Definitely this. When software silently thinks it knows what I wanted and silently does the wrong thing, sometimes you find out a long time later, and it ends up being very expensive, particularly when it’s to do with data analysis. I would always prefer an error. I think this is a huge weakness of Pandas. I have to put “errors=raise” all over the place, although not many functions have that parameter.