The mechanism · The redemption · Element

The rewards

What can be obtained.

The part

What it is

Discounts, products, services, access or experiences. The perceived value differs enormously from the cost to provide, in both directions.

Rewards costing little and valued highly are the best available design and are worth looking for deliberately.

The smallest level

The attributes it carries

Each attribute is one of the framework’s shared types. What a date is, and how it is written, is defined once for the whole model — the note here says what it means in this particular place.