On the other hand the Six Sigma has been criticized that it is an old methodology, based on the philosophy of
perfect customer satisfaction and profit, which is a foundation of any successful management-oriented thinking and
does not bring anything new. Despite these claims, according to Töpfer et al. (2008), the Six Sigma is a realized
quality at the level of zero defects that offers businesses in difficult economic situations specific highly effective,
profit orientated project management. Recorded failures of Six Sigma are attributed not only to the production
employees but mainly to the managers that make decisions.