Excel is the software development environment for the programming lay person. I don't mean that pejoratively; it does an incredibly good job. But introducing mo

Excel is the software development environment for the programming lay person. I don't mean that pejoratively; it does an incredibly good job. But introducing more rigor seems like it will mostly just reduce its effectiveness in that role. I guess telling people "Here are some common spreadsheet oopsies" could be useful. However, I don't see a world where the most approachable and broadly used method to make software stops being rife with programming errors.