Something I saw a smart IT manager do is produce graphs for the monthly board report without a legend, labels, or any numbers at all. Just lines, but not even g

Something I saw a smart IT manager do is produce graphs for the monthly board report without a legend, labels, or any numbers at all. Just lines, but not even grid lines. His explanation was that nobody understood the numbers anyway, the graph is just there to be a pretty colourful picture while he talks.