Derivation Web

source_78d03befb9644b3d

## One-sentence thesis

In this source bundle, exercise recommendations clusters around icfsr: 2 of 5 cited titles explicitly name the boundary, while the remaining titles are context only and do not expand the claim into systemic aging or intervention efficacy.

**Interpretation note:** This is a hypothesis-generating alpha memo. It is not medical, policy, investment, or clinical advice.

## Why …