As far as I am aware, the business world has been using Excel for a lot of things for quite some time now, why is it suddenly something we should all be worried

As far as I am aware, the business world has been using Excel for a lot of things for quite some time now, why is it suddenly something we should all be worried about? Excel in capable hands is a strong and multi-purpose software application that is proven to work. It's not merely just a spreadsheet application, Excel allows spreadsheets to be shared around and viewed by people who don't even own Excel. Should we be worried about driving cars and flying in planes because they're so complicated internally errors are easily hidden? A bad mechanic will always blame his tools. There is nothing wrong with Excel and just because errors are easily hidden doesn't make it a bad program to use. I'm sure error rates are pretty low anyway.