This great article by Matthew Syed in the Times, challenges the current backlash against the marginal gains process. As a business owner I am only too well aware that is precisely what can, and often does, make the difference. 

Big 'wins' are rare when you are dealing with well defined and long established processes, but if you can motivate your teams to constantly look for those little improvements, you will be amazed at how much you can gain over the medium and long term.

In my opinion the use of 'open loop' systems to encourage and foster feedback from your staff is imperative for any business if it wants to thrive in today's global economy.