Use of challenges in cricket?!

With the controversy that has followed the 2nd test between India and Australia with regards to the umpriring, I think we should rethink the whole umpiring situation of today. Those that have played the game will tell you that the human touch is still required but having so many decisions go against you is plain unfair. We should probably approach it the way tennis is doing it. The captain should have an option to challenge 2 decisions per inning. Upon challenge the 3rd umpire will be consulted. If the decision given by the umprire on the field is correct then the challenger loses one of his challenges. However, if the consultation leads to reversal of the decision the field umpire has made then the challenger still retains his challenge.

Its time we learn from our mistakes and get innovative. Making a mistake once can be forgiven, but repeating it is a sin!