Hundreds of scientifi c articles are published every year on microencapsulation. Hundreds of industrials attend to seminars,symposiums or training events on encapsulation. Microcapsule production represents thousands of tons of microcapsules peryear in various fi elds from pharmacy to food, from detergence to agriculture. But, through the numerous meetings I attendedor organized with industrials (http://bioencapsulation.net), I kept a feeling that the domain is still not really mature. Thereason for it, which may not be specifi c to microencapsulation, is the lack of integration in the research and development ofthe engineering aspects. In place of providing general concepts , let me illustrate my point of view by two examples. ...