People ‘know’ how to use Microsoft products. I’m a data guy and might spend less than a day a week in word, PowerPoint, excel. Most of the time I spend in them is checking other people’s work. I’m still called on to help people with such tasks as switching from footnotes to endnotes, moving files in SharePoint, fixing formatting. My general knowledge of navigating the UI and googling fixes is better than what people ‘know’.