Choo-choo Buffology is the pseudo-science of repeating the same specious arguments ad-infinitum to avoid rational criticism of transit-rail projects. Practitioners appear to have better arguments than their critics primarily because their arguments can be summed up within media-friendly sound bites. This phenomenon is frequently attributed to the choo-choo buff spending a majority of their research funds on media consultants and focus groups, while their opponents spend their research funds on actual scientists and economists.
I wish there wasn't some way of silencing that choo-choo buff. He's been practicing choo-choo buffology so long he's figured out all you have to do is claim that trains are green, and nobody can point out that according to the transit authority's own environmental impact statements that bus rapid transit is both greener and more efficient without being labeled pro-pollution. He's really a master choo-choo buffologist.