In Round 1 you had reason without observation, and you guessed. In Round 2 you had observation without a framework, and you fit a story. In Round 3 the concept and the data did different jobs that only worked together.
In Round 4 something stronger happened. Before the concept "the box has memory," the data was noise. After it, the same data became legible. You did not get more observations — you got a category through which the observations could mean anything at all.
This is what Kant called constitutive. Concepts like causation, substance, and unity are not aids that help us interpret experience after the fact. They are the precondition for there being any experience to interpret. This is why Iqbal could not let Ghazālī sever thought from intuition: take the concepts away and the data does not become more raw and honest — it ceases to be data at all.