> The part about mezzanines struck me. BART has huge barren mezzanines. There is not one shop in the entire station. I found that odd about BART, too - initial

> The part about mezzanines struck me. BART has huge barren mezzanines. There is not one shop in the entire station. I found that odd about BART, too - initially I thought this was due to crime (BART seems pretty sketchy, and opening up a shop there would be an invitation to robbers and thieves), but then I realized "safer" metros don't have them either.