Inlet
Data intake and evidence organization
For data to count as evidence, you have to be able to say where it came from, when it arrived and what was done to it. Inlet is about data intake and evidence organization: information enters the system carrying its source, its timing and its version — not just a final number.
The question it cares about
A number is useful, but nobody can say where it came from; several versions of the same fact are hard to compare.
Where it sits in the family
The one that lets information in. It stands on its own, alongside Gauge and Sluice.