That is a very bold statement indeed. But Prof Richard Boucherie at the Centre for Healthcare Operations Improvement and Research (CHOIR) of the University of Twente in the Netherlands, reckons it is true. For the past 15 years CHOIR has been helping Dutch hospitals, labs and homecare groups to increase their efficiency through mathematical modelling using operations research methods including queueing theory, optimisation and computer simulation. We interview him on how such an approach can make massive efficiency gains.