Conclusion
4D Printing: promises or operational future?

The sum or (recursive) product of various scientific, cultural, temporal, administrative and motivational tectonics for action does not militate too much in favor of change, all the more so as it is already difficult to be financed to remain in continuity and incremental innovation... The modalities for taking back control of the future of additive manufacturing cannot be based on strict planning with a scenario that is easy to write in advance, especially with evolutions of several tens of percent per year. Today, we know that only flexible systems that themselves contain a dose of undecidability can adapt and claim relative efficiency in emerging operations, as 4D printing can. In other words, fuzzy/agile reasoning categories are needed to be able to think or act in or on conditions that have become uncertain, even paradoxical, but with risks of failure... This is why the search for points...