Understand
what connects.
Start with a system, then follow its consequences. Every lesson includes an understanding check. All routes are open.
Payments
Follow the payment, from request to reconciliation.
- The life of a card payment.7 min
- Who does what in a payment?5 min
- When a payment is challenged.5 min
- The person and the payment5 min
- A card number with boundaries5 min
- Undo the right thing5 min
- One intention. One payment.5 min
- A message is not yet evidence5 min
- Three records. One explanation.5 min
- The second route is still a payment5 min
- One purchase, several currencies5 min
- Solvent is not the same as ready5 min
- Read the full price of acceptance5 min
- A field has a meaning.6 min
Banking & open banking
Understand access, consent and the movement of money.
- Open banking, without the mystique.6 min
- Seeing an account is not moving money5 min
- Permission has a lifecycle5 min
- Seconds change the operating model5 min
- Rules are not the same as rails5 min
- A match is a useful boundary5 min
- Permission with a perimeter5 min
- Protected in which way?6 min
- Who starts the collection?6 min
Operations
Separate records, events and economic outcomes.
Risk & fraud
Find evidence. Measure trade-offs. Choose a response.
- From signal to evidence.6 min
- What the queue cannot tell you.7 min
- Give outcomes time to arrive.6 min
- The rare-event trap5 min
- What does confirmed really mean?5 min
- A score is not a decision policy5 min
- Look where the rule did not look5 min
- The next person should not start again5 min
- Related problems, different questions5 min
- Know the person. Understand the business.5 min
- Collect for a reason5 min
- The name is a lead.6 min
- Do not let the model see tomorrow.6 min