Two loaders, described. The unsafe one is not in this folder.

Data-only
  Input: benign-data.json
  Operation: parse the text as JSON and accept only an object with a string name
  Result on the card: a dictionary {"name": "Ada"}
  The card is not a live parser result.

Code-capable
  Input: an untrusted file whose name ends in a familiar extension
  Operation: rebuild program objects and run code during the load
  This folder does not contain that file or that call.
  A familiar extension does not change the operation.

Activity choice: the data-only path.