There is a common misconception of the Laffer curve that is based on trying to interpret the data. However, what the Laffer curve demonstrates is that there is a curve, nothing else.

Please note that I do not consider anything from Wikipedia as evidence of anything, so if you are trying to get me to respond to something to do within a Wikipedia article, it just isn't going to happen. The number of times I have discovered serious issues with those articles, especially on political, philosophical, and academic topics is, frankly, disturbing.

There is a theory within some economic schools of thought that savings generates production, but this is not directly to do with tax rates or the Laffer curve, nor even rich people.