wasteful way of tax use

Last night TV program featured the truth hidden behind medical accidents caused by doctors.I always feel very sorry that simple mistakes cause many serious accidents.Besides,most of such mistakes could have been avoided if some preventive system existed.Another reason for such trouble is that people don't want to disclose their mistakes.I think our advanced society seems to be lacking something very important under much harder business races.
The other program featured together was wasteful use of tax revenue by the government and its relation with golden parachute Amakudari problem.It's one of Japanese bad traditions among government officials who around their retirement age descend to private companies with higher position so that they can keep on making a lot of money.That program also disclosed that there exist some government controlled corporation whose purpose is just to offer positions for such bureaucrats without any distinct purpose.I hope it can be more clarified about how our tax is being used.