[karlkfi]

It doesn't actually matter what story points stand for, as long as they converge towards a metric that can be used for consistent predictions.

In fact, if you pin them to something concrete, you lose the ability to adjust the point value to account for less-concrete variability.

They're almost always "pointless" in the beginning, no better than a Super Wild Ass Guess (SWAG). But if you use them relatively consistently over time, have relatively consistent work, and account for team size changes, they can become valuable tools for predicting completion time of complex/complicated tasks/project.