01
Work from company documents
Read the emails, board slides, dashboards and operating notes that reach your desk — not a narrator’s summary of them.
Run a company through ten hard decisions.
You are the new chief of staff at Latchkey, a smart-lock company with one strong product and a difficult year ahead. Work through the company’s own paperwork, make the calls and learn the method each situation demands.
Join by 15 September · free foreverFully self-pacedAbout 7–9 hours
Mara Voss
Founder and CEO · to you
You start Monday
I do not need a note that makes everybody comfortable. I need the decision, the evidence that earns it, and the fact that would make us reverse it.
#exec-room · Friday 08:42
Priya Nair
The retailer needs a number by Thursday.
Tomás Ibarra
Then Thursday is a constraint, not an argument.
Your memo · due 17:00
Make the call. Name the reverser.
Chapter 01 / 10
1company story
10connected decisions
18judgment methods
11written memos
Make ten decisions across one company year.
Methods appear inside the work that needs them. Each chapter leaves a record you use in the next one.
02
Make the call in sequence
Every chapter advances the same company. Earlier choices become context for the decision waiting in the next room.
03
Get a reasoned debrief
Tests teach immediately. Written memos are reviewed against the chapter’s own criteria, with a specific push for the next draft.
Five colleagues argue for different calls.
Finance, product, growth and operations each see different evidence and risk. You have to make the final recommendation.
Mara Voss
founder and CEO
Dan Okafor
co-founder, VP Engineering
Tomás Ibarra
CFO
Priya Nair
VP Sales
Ellen Park
board member, Meridian Growth Partners
Ten chapters. One accumulating record.
35–60 minutes per chapter
- Chapter 1
What decision is actually on the table
Why smart people in the same meeting can solve three different problems while agreeing loudly
40–50 min - Chapter 2
Intent, and what the dashboard can't see
What a dashboard structurally cannot see, and how to name any metric's blind spot
35–45 min - Chapter 3
Borrowed conviction
Why the winner's story is the worst evidence about your own odds
35–45 min - Chapter 4
Four stories, one number
Why "seasonality" ends arguments without settling anything
40–50 min - Chapter 5
What the money says no to
Opportunity cost: the real price of a choice is the best alternative it cancels
40–50 min - Chapter 6
Arguing the other side
Steel-man: writing the other side's case so well its own advocates would sign it
35–45 min - Chapter 7
How this decision fails
Inversion: writing the launch post-mortem before the launch
40–50 min - Chapter 8
Doors you can't walk back through
Two-way and one-way doors: sorting a contract clause by what undoing it would cost
40–50 min - Chapter 9
When the market grades late
Kind and wicked learning environments: markets that teach fast against markets that flatter for years
40–50 min - Chapter 10
The record
The decision journal: the only defence against your own hindsight
45–60 min
Eighteen methods, taught at the moment of use.
The outside view appears when the team overweights one success story. Red teaming appears when the board’s preferred plan needs a serious challenge.
Explore the Judgment Playbook01Clarity test02Outside view03Inversion04Pre-mortem05Red team06Competing hypotheses07Second-order thinking08Steel-man09Two-way / one-way door10Fragility audit11Commander’s intent12Decision journal13Kind vs wicked learning environments14Decision Quality: six links15Falsifiability16Opportunity cost & trade-offs17Survivorship bias18Map is not the territory
Who should take the course?
Managers and operators
Practise decisions that cross product, finance, sales and operations.
Founders and chiefs of staff
Build a repeatable process for high-ambiguity calls without flattening the trade-offs.
Consultants and strategists
Move from evidence to a committed recommendation that can survive challenge.
Product and commercial leaders
Strengthen the judgment behind roadmaps, pricing, growth and resource allocation.
Learn the method in one company. Transfer it across fifty more.
The course builds a connected decision process. The case library then changes the industry, stakes and evidence so you can test whether the skill travels.
Start with Mara’s welcome letter.
Meet the team, read the first brief and make your first recommendation. The Register by 15 September 2026 and keep individual course access free forever.
Join Latchkey