experimentation with/in• Experimentation in health-care reform should be left to each state.• We want to understand it better and to encourage openness and experimentation in these early stages.• We encourage experimentation in the broadestsense of the word.• Policies must be flexible, and allow for extensive experimentation in new forms of rural economic activity.• Furtherexperimentation with more leaves of the same treeconvinced Shen Nung of the value of the plant as a health-giving medicine.• The difficulties of experimentation in this area are well known.• A period of experimentation in which the futureleader is able to try out and refine his or her idea.• Some experimentation withbackgrounds is indicated.• Subsequentexperimentation withfumes from cooking and coalfiresproduced the same results.