Classical Western thought conceives time in three ways. There is Chronos: the physical, linear time in which we live and that we can measure. There is Kairos: the instant, the opportunity, that punctual moment that makes the difference - the difference between a "before" and an "after". And there is Aiôn, the cycle(s) of the universe and life, the ages, the era, the generation. Today, in the age of globalization and mediatization, through the Internet, social networks, and increasingly efficient technological resources, our societies live in simultaneity: in the immediacy of information, in the midst of the action, in the urgency of re-action. But where there are action and urgency, there is often a need for care. In medical and social care procedures, whether personalized or population-based, the question of time is essential, especially with people or populations in a state of fragility or vulnerability. And it intersects with another major issue in our current societies: the need to "stay human".