stylistic:tone, structural:reformatting
Adults

Although adults who engage in high amounts of play may find themselves described as "childish" or "young at heart" by less playful adults, play is an important activity, regardless of age. Creativity and happiness can result from adult play, where the objective can be more than fun alone, as in adult expression of the arts, or curiosity-driven science. Some adult " hobbies " are examples of such creative play. In creative professions, such as design, playfulness can dispel more serious attitudes (such as shame or embarrassment) that impede brainstorming or artistic experimentation in design.

Imaginative play and role play may allow adults to practice useful habits such as learned optimism, which is helpful in managing fear or terrors. Play also offers adults the opportunity to practice concepts that may not have been explicitly or formally taught (e.g. how to manage misinformation or deceit). Thus, even though play is just one of many tools used by effective adults, it remains a necessary one.