So Twitter now wants a sky bridge connecting two office buildings, just to make sure that the workers never have to set foot out of the building or see anyone else. It's importing the idea of the suburban "campus," where everything is self-contained and nobody leaves (for lunch or anything else) to an urban setting.
Didn't we give Twitter a tax break in part so that all of those workers in mid-Market would help revitalize the place? Instead, a study by the city's economist, Ted Egan, shows that taxable sales (retail, restaurant etc.) in the tax-break area grew more slowly than other parts of the city -- suggesting that the tax break may have been great for Twitter but no so much for local small businesses.
Hermetically sealed away from the Morlocks: