Dear Friends, I am writing on this site, very first time. I have taken my BB training from Mr. Vishwadeep in Mumbai. I have read Mr. Khatri's response to the query and I agree to large extent the reason mentioned by him. In addition to Mr. Khatri's answer, I would like to add my view point 1. What was the management control and improvement techniques when there were no such known methodologies like Six-Sigma, TPM, BPR, TQM etc. were non-existant? 2. I feel it has always been quest of a man to excel and in the process, he has designed many such improvement methodologies. 3. This is similar to a case when a patient wants him to be treated with and having various options available like Alopathy, Ayurveda, Homeopathy etc....But man chooses which gives him benefit or which suits to his body. So is the case in an organisation. 4. There can not be just one single reason to not adopt six-sigma as methodology for improvement. I hope, I have made sense to the discussion. Jitendra Malhotra Dy. G.M. (World Class Manufacturing) Aditya Birla Mgt Corp Limited, Mumbai