'Temporary' and 'momentary' tranformation

'I understand the "transformative" in a number of ways, including the less dramatic.  As I use it, a "transformation" may be not only profound but also momentary and temporary.  

On the one hand, it could occur as a dramatic change with effects for a lifetime.  One the other hand, it could occur for the duration of a performance, within a defined encounter, or a portion thereof.  

In regard to memento mori items [items that bring about awareness of mortality and human life], including texts, objects, and performances, the transformative experience could take place on the spot or, alternatively, at a later time, through memory.

The performance/art/work/event is recalled, and the individual's organization of reality and meaningful narratives are reconfigured temporarily or for longer duration, in some cases becoming permanent, but not necessarily.  I want to maintain the value of "temporary" and "momentary" because even these become permanent in memory, history, and empirical fact.

[Along with dramatic transformation,] I emphasize these humbler senses of transformation....'

-DD, p. 23, adapted