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ANTIFROG / FIELDNOTESAn open school for fintech minds

Good judgment.
Learned here.

A stork and frog examine a brass canal model in a lakeside learning observatory
The Field School

For the questions
between the rules.

Find your way in
Observe carefully. Decide thoughtfully.Free to explore · No registration
Your next twenty minutes

A little further.
Every visit.

Start with a principle. Test it against a decision. Return to what stayed with you.

Begin your first week
41 lessons21 decision studies115 definitionsYour notebook Progress saved on this browser.
Choose a thread to follow

Fintech is connected.
Start somewhere.

01 / payments

Follow the money.

From checkout to settlement. Understand the participants, messages and money movements.

Follow this route 02 / banking

Open the system.

Accounts, permissions and bank payments. Understand what access does—and does not—mean.

Follow this route 03 / operations

Keep it moving.

Retries, records and reconciliation. Learn to diagnose the gap between a message and an outcome.

Follow this route 04 / risk

Question the signal.

Evidence, identity and trade-offs. Build decisions that survive a second look.

Follow this route
The practitioner library

Stay with the question.

24 longer articles, printable desk cards and three connected learning series. Take a working question further than a short lesson.

Enter the library   Follow a series
Four ways to become better

What brings
you here?

Understand a principle. Practise a decision.
Find a definition. Follow a development.
Each desk has a different purpose.

01

Theory Understand why.

Short lessons that build a mental model. Read, check your understanding, then apply it.

41 lessons / four learning routes
02

Practice Make the call.

New evidence arrives. Your view can change. Work through a decision and leave a reason.

21 decision studies / 11 case files
03

Reference Find the detail.

Definitions, common confusions and a calculator. A working reference, not a course.

115 terms / metrics lab
04

Industry Look beyond the desk.

Dated developments from primary sources, with an editorial question to take to your team.

News & analysis / edited 06 Nov 2026
Start with the plumbing / Interactive explainer

You tap. What happens next?

Follow a €100 card payment through the gateway, acquirer, network and issuer. Separate approval from settlement and payout.

Walk through a transaction
A wide, almost silent foggy pond at dawn.
A first taste / 4 minutes

The queue is quiet.
Should you be?

A rule cuts alerts by 60%. Operations calls it a win. You have one question before the rollout.

Take the chair A fictional decision study. Three turns, one debrief.
New to the work?

Your first week,
with a little direction.

A five-session route through theory, reference, practice and industry reading. Built for someone new to fintech and the colleague helping them settle in.

Follow the route
Your place at the desk

Leave a thought.
Come back to it.

Your notebook gathers lessons and decision studies. Revisit a question after three days and see what you remember.

Open my notebook Saved on this browser only. You can export or clear it.