My position, and I believe Fern's as well, is that the power dynamics are sufficiently different between the public and private sector that allowing collective bargaining tips the scales too far in to workers favor.
Right, and I'm saying that if you analyze the data more closely you don't really see that happening. Government jobs require more education than private sector jobs on average, more government workers are unionized than average, etc. If you control for all these factors, in general the differences aren't nearly as large as people think.
