The lenses mentioned in Andy Matuschak's "prompts" blog post
In Andy's blog post about writing SRS prompts he's talking about chicken stock.
lens -- attributes and tendencies
What makes stock, stock? What's always, sometimes, and never true of stock?
lens -- similarities and differences
Knowing what stock is requires knowing what relates and distinguishes it from other adjacent concepts.
What are some examples of stocks? Are there important "sub-concepts" of stocks? Is "stock" a part of some broader category? Visualize a Venn diagram, even if the edges are fuzzy.
What does stock do? What causes it to do that? What doesn't it do? When is it used?
lens -- significance and implications
Why does stock matter? What does it suggest? Make the concept personally meaningful.