The point is that scatter plots are harder to read than histograms. It's not two histograms vs. one scatter plot, it's replacing the current single histogram sy

The point is that scatter plots are harder to read than histograms. It's not two histograms vs. one scatter plot, it's replacing the current single histogram system with a single scatter plot. Also, side-by-side histograms aren't the only way to display two parameters in a single histogram. What about stacked histograms? They scale up to an arbitrary number of parameters and everybody who can read a histogram can read a stacked histogram. Scatter plots seem like thermonuclear overkill for a problem which most movie sites seem to consider to be "solved".