# Memory Index - [No constant leaf in RcCircuit](feedback_dag_no_const_leaf.md) — coefficients live in Poly; don't suggest a Const variant for RcCircuit - [Always ask before changing settings](feedback_settings_approval.md) — describe proposed settings changes and wait for approval before editing any settings file - [Use cargo add for dependencies](feedback_cargo_add.md) — never edit Cargo.toml directly; use `cargo add ` instead