I think hoping to PROVE it might be a bit overly ambitious… but I think that there are at least parts of the situation that it’s at least hypothetically possible to look at with some level of objective analysis. For instance, while you might have issues with the precise way the data is presented in the graph of filibusters I linked to, that’s at least one place where it IS possible to gather meaningful numbers. And even more amorphous things like “are the democrats getting more extreme” are potentially subject to some level of analysis. For instance, we could take any issue which has a number attached to it, and graph the slope of that number. Currently demoracts are pushing for a minimum wage increase, something I’m sure they’ve done many times before. It’s presumably possible to graph their requested minimum wage over time. If suddenly the minimum wage they’re requesting is 3 times higher than it ever has been before, correcting for inflation etc, that would be evidence (although not proof) that they have gotten more extreme.
I agree that it’s fairly unlikely that someone is going to do that level of work and post something really convincing IN THIS THREAD, but (a) I think it’s interesting to discuss, and (b) there’s at least some chance that some very smart person who is professional political scientist or journalist has already assembled a bunch of data related to this issue, and someone might link to it.
Certainly, I think “have the Republicans in the senate gotten more obstructionist” is something we’re more likely to be able to “objectively” analyze than some other classic topics for SDMB debating, such as “would we be better off if Romney had won the election”.
I think saying “it’s impossible that there could EVER be an uncontroversial way to interpret the evidence gathered” is a fairly extraordinary claim.
That might be a more meaningful and “fair” graph, but it’s certainly not more straightforward. If someone sets out to make a graph of filibusters over time, the most obvious direct starting way to do it is exactly the way that graph is. So call that the level 1 version. Then some more thought might indicate that it should include additional relevant information, namely, who controlled the house (and the presidency). Call that the level 2 version. You then seem to be implying that a nefarious liberal-oriented graph maker deliberately excluded that information, realizing that the graph seemed more damning without it, leading to the level 3 version. But I think the far more likely explanation is that the graph is just the level 1 version as it appears to be.
I don’t see how that additional information makes the graph any less damning towards Republicans. There have been 3 basic times when the rate of filibusters increased dramatically… from 1969-1974, from 1986-1994, and from 2008 to the present. All three were during Republican-minority senates. There may be additional data points which ameliorate that somewhat, but unless for whatever reason the same configurations of house/senate/prez that would lead either party to filibuster more happen ONLY to Republicans and NEVER to democrats purely by change, I can’t see how that does anything other than reflect badly on Republicans.