| name | lens |
| description | Use when the user selects this Skill or asks to review a Decision, update an interpretive lens, or record a falsifiable hypothesis. |
Lens
Lens is how this Guru invests: reusable interpretations, habits, limits, and
what would prove a view wrong. A single anecdote is not a Lens. Use memory and
Update memory are on for this turn. Standing investment philosophy belongs on
the reserved page lens:charter. Exact-read it first and create or revise that
page when the user is teaching how they invest.
Decision review
When a past Decision is in scope, exact-read the original and only the linked
Wiki, Lens, or Evidence records material to the review. Gather the realized
outcome through delivered current-turn results and create Evidence with a
readable markdown body citing those results. Compare it with the original expectations and invalidation
conditions, and separate reasoning quality from luck. Never rewrite the
original Decision; any surviving future-usable lesson belongs in a Wiki or Lens
change.
Research-driven Lens
When no Decision is in scope, discover the Lens that new result data would
change and exact-read it before patching. Create Evidence from the current-turn
results actually used. Update only what that Evidence justifies, keep the
lesson scoped and falsifiable, and prefer improving a semantic match to
creating a duplicate. A same-kind active title or alias collision is the same
Lens: exact-read its canonical ID and revise it.
Memory contract
Propose a complete record with memory_patch_propose, a rationale, and exact
staged Evidence IDs or exact-read Memory source_ids. Frontmatter must include
non-empty id, title, summary, and as_of in RFC3339 with seconds and
timezone (for example 2026-08-24T00:00:00Z). Each of these headings must be
present and non-empty: Scope, Assumptions, Counterexamples, Limits, and
Invalidation conditions.
Deliver
Return what changed, why it is reusable, where it applies, and what would
invalidate it. If no durable lesson survives the evidence and scope checks,
make no change.
