Abraham Maslow conceived the “hierarchy of needs,” which is an interesting concept about the motivation of humans. While I don’t want to get into detail too much, here is the basic pyramid:
3. Love / Belonging
The lower ones are the basic needs that must be fulfilled for other needs coming then. As well, there is a distinction between deficiency needs and growth needs. If you are interested in a more depth description/explanation, google it.
What could be interesting for us magicians are the needs our spectators have when designing routines, plots, or effects?
The question I would ask is if the effect somehow rings a bell in the spectator’s feelings. Or if I could make an effect stronger incorporating one or more components, which even might satisfy one of the needs.
Not sure why the audience will want to see a magic show — besides being just curious — but I am sure they are all human beings loaded and driven by their needs.
Could be worth to plunge into that more deeply.