Using technology in cricket

Mehedi Hasan, Uttara, Dhaka
In recent years, umpire's 'wrong' decisions on the field are seen to be determining a game's fate to a certain extent and sometimes creating misunderstanding among the rival countries. Technology has paved the way for watching things much more closely and clearly. Umpire's wrong decision makes them unpopular and controversial. A few years ago, the use of technology in cricket became a controversial issue. But what the cricket world has seen since then is more shocking and embarrassing. Watching your favourite team losing terribly because of umpire's 'wrong decision' is painful. My question to those who are against the use of technology is, if technology can be used in certain cases such as detecting the ball whether it crossed the boundary or not or confirming a doubtful catch or run out etc, why can't it be used for deciding LBW or an edge of the bat or such other questionable/confusing matters?