Rails Misapprehensions: What the fuck is MVP?

{{{ People usually make me feel slightly embarassed when they ask things like *”How does Cells handle MVP?”* or, even better, *”Is there any MVP _implementation_ in Cells?”*. Frankly, *I don’t have a fucking clue about the _real_ differences between MVP and MVC*. In the past I usually deflected people’s attention by buying beers instead…