Summary: Do we have any other choices other than Metro? Are we trying to hide our deficiencies and closed our eyes to all the improvements? How good metro projections are? All these questions are very critical and crucial before we consider Metro project?
Scaling up infrastructure and managing expectations of the greens isn't an easy job. A protest worthy job here and a green initiative there, one would expect to see some balance, and even better a system to quantify such balance. What if a body (BBMP or KSPCB) was to keep track of "green score" lost or scored on every project running in the city?
Summary: This article tries to analyse Metro project and expectation from it. If they are reasonable? Also have the people who decided for metro really considered existing system's potential and limitation correctly? If yes than what was cost and efficiency prompted them for alternative. Its a hard to answer but it will be true reality check for metro.