Keala,  in answer to your question about whether I'm questioning the public's knowledge about what rail can actually deliver in benefits or CB's ability to accurately report public opinion in their poll, I question both. 

First, it's likely many CB poll respondents, misled by City rail hype for years, have no idea how little $10 billion truly buys. If these misinformed poll respondents are  then asked by CB  should the project be finished, they are more likely to say "yes".  If that is the case, then the CB poll results are worth questioning. 

I used to work for a polling company. I assure you it is quite possible to conduct a professional, unbiased survey that provides respondents with basic, undisputed facts as part of the survey questions.  Given the high degree of misinformation about rail, I'm disappointed CB survey questions fall short, which definitely makes me question the findings.