HB53 original teaching artifact

Watch one data field change the ad

Trace the input, eligibility decision, selected record, bound elements, and the production loop that is deliberately absent from this deterministic demo.

40 inspectable fixture states

Synthetic data · No live inventory · No performance learning

Input and failure controls

Fixture state

selected_product_id is present

selected_product_id

Edit selected catalog record and landing mirror

title

price_cents type

price_cents value

currency

image_key

destination

independent landing price (cents)

Every change evaluates locally. There are no network calls, cookies, user IDs, random choices, or performance updates.

Rendered teaching output

Yellow flash marks output elements changed from the family baseline.

A01

Northstar Goods · fictional

Decision trace

Reason

What a production optimizer would add

This lower loop is explanatory only. It is not connected to the controls above.

Rendered impression ID

Outcome event + attribution

Objective and comparison

Exploration or allocation policy

Model / weight update

Next eligible selection

Fixture self-check

This checks deterministic rules against the 40 expected states. It is not an ad-platform test or a performance result.

Not run yet.