Parthiv Patel, how much of his international career have you watched? He has been a total failure at the highest level, and you want him to replace Dhoni who is improving everyday. HOw cna you forgive him for the numerous catches dropped, notably the easiest stumping ever that could have won India the series at Sydney in 2004. Karthik is unlucky cos of Dhoni. If he performs exceptionally better he may replace him. But frankly how the hell can you just wipe off Dhonis exceptional captaincy in the ODIs where he unleashed one smart play over the other and beat world no 1 and world no 2 ODI teams. If you want to prove Dhoni is a lame duck you have to try harder.