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⁠⁠The $900 million wire that wasn't final

October 8, 2026 · 33 min

Show notes

Patrick McKenzie (patio11) reads his 2022 Bits about Money essay "Finality does not exist in payments." It argues that how final a payment is depends on the rails, the parties, and the governing law, not on the payment method alone. He explains why the reversibility of credit cards is what made internet commerce possible. He also covers the "hold harmless," the brief phone call between operations staff that quietly unwinds wire mistakes every day. He then applies the essay to Citibank's 2020 accidental wire of nearly $900 million to Revlon's lenders: a district court let recipients keep about $500 million before an appeals court reversed it. He closes with how the UK, India, and Japan have each tried, with mixed results, to make fraudulent instant payments less final.

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Full transcript available here: https://www.complexsystemspodcast.com/the-900m-wire-that-wasnt-final/

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Presenting Sponsors: Mercury & Granola
Complex Systems is presented by Mercury—radically better banking for founders. Mercury Spend hands your team and agents their own cards with limits you set once, so nobody waits on you to approve a SaaS invoice and nobody chases a receipt. Apply online in minutes at https://mercury.com/.

If meetings consistently leave you with hazy action items and lost context, Granola handles the transcription so you can actually participate and gives you searchable notes afterward. Try it free at granola.ai/complexsystems with code COMPLEXSYSTEMS

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Links:
(Source essay) Finality does not exist in payments: https://www.bitsaboutmoney.com/archive/no-payments-are-final/

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Timestamps:
(00:00) Intro
(01:23) Finality is a technosociolegal construct
(03:26) Non-state agreements for dispute resolution
(07:34) Wait, are you telling me wires are reversible?
(12:43) Why does this matter?
(13:26) The $900M mistake
(14:52) Sponsors: Mercury | Granola
(18:11) The $900M mistake (cont'd)
(20:37) Final, then not final
(23:09) How other nations handle finality
(32:39) Wrap

All episodes of Complex Systems with Patrick McKenzie (patio11)

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