Every economic fact — a purchase, a production run, a decant, a sale, a spill — is a recorded, immutable movement. Never deleted or overwritten: corrected with a reversal that itself stays in the history. Most ERPs overwrite the current state; LL preserves the sequence of facts.

LL doesn't pretend to know what it doesn't. A cost is Confirmed only when set by a real acquisition, Estimated when it needs a policy, Missing Source when there's none. No magic "set cost" field. No invented numbers passed off as certainties.

Inventory Health — what needs attention now? Cost Investigation — why? Provenance — what actually happened? Investigations hold only as evidence assembled over what is tracked, with honest boundaries around what isn't — never as conjecture about physical reality, demand, or blame.

Wine and draught becoming operational stations, high-velocity tracked bottles, perishables that change state once opened, tares derived at activation and weighed at end-of-life. LL absorbs these as variants on the same spine — without forking the model, without forcing you to lie in the data to make it reconcile.

Every write carries an authenticated actor. The system identity is reserved for internal reconciliations only. You always know who did what — and no audit entry can be forged by the client.

Where other systems trust whatever a human types, LL reads reality directly. An NFC tag identifies the exact bottle or container; an intelligent BLE scale captures its real weight at that instant. One tap becomes one movement — the resolved lot, the measured remaining, the moment. Counts stop being a guess.