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The Mechanics of Scale, a free business course on Tomo

The Mechanics of Scale

Like Duolingo, but for The Mechanics of Scale. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.

For the part of you with thirty open tabs that never became anything.

24 levels across 4 sections, about 48 minutes end to end, roughly 10 days at five minutes a day. It moves through Architecting for Growth, High-Stakes Decision Making, Organizational Design and Culture, and The Macro View.

24 bite-size levelsAbout 5 minutes each

Free forever · No credit card · iPhone & Android

Bizzie the Beaver, the guide who teaches the The Mechanics of Scale course
The Mechanics of Scale
with Bizzie the Beaver
24
Levels
4
Sections
5
Min/day
What you'll learn

Key ideas in The Mechanics of Scale

  • Rising CAC and marginal customers
  • Contribution margin and growth fuel
  • LTV/CAC and market saturation
  • High-margin growth flywheels
  • Strategic implications of LTV/CAC ratios
  • The speed limit of growth
  • Evaluating LTV/CAC as a signal of market saturation vs. execution quality
  • Determining growth sustainability based on unit profitability
  • Operating leverage is maximized when incremental revenue carries almost no incremental cost
  • Margin expansion occurs when fixed costs (like engineering or rent) are spread across a larger volume of units
  • Service businesses lack fixed cost leverage because their primary cost—labor—scales linearly with revenue
  • Aggregate data can show growth if new user acquisition outpaces the silent churn of older users
  • Cohort 'smell tests' look for the 'flattening' of the retention curve; if it never flattens, the product has no product-market fit
  • Declining retention in newer cohorts often indicates that the product is being pushed to a less-qualified audience
  • Identifying how different cost structures drive margin expansion
  • Distinguishing between healthy growth and 'leaky bucket' retention issues
Why not just Google it

You've tried the other tabs

Wikipedia

Thirty open tabs. Four facts you actually kept.

YouTube

You watched. You nodded. By Sunday it was gone.

ChatGPT

One answer, then back to scrolling.

Online courses

Eight weeks. You meant to finish. You didn't.

Tomo gives The Mechanics of Scale the Duolingo treatment: levels, streaks, and quick quizzes that test what you just learned. That game loop is what the tabs above never had, so it's the one you actually finish.

Try a question

Here's what playing it feels like

A real question from this course. Take your best guess.

The Mechanics of Unit Profitability

Which metric represents the actual cash available to reinvest in marketing after covering the variable costs of a sale?

Get it right to open this lesson and 23 more in the app.

Course map

Where The Mechanics of Scale takes you

Move beyond basic management into the high-stakes world of capital allocation, competitive moats, and organizational architecture. Learn how to design a business that doesn't just grow, but scales sustainably.

  1. 1

    Architecting for Growth

    • Unit Economics and Scalability
    • Capital Allocation and Portfolio Strategy
  2. 2

    High-Stakes Decision Making

    • Competitive Moats and Defensive Strategy
    • Mergers, Acquisitions, and Strategic Partnerships
  3. 3

    Organizational Design and Culture

    • Designing Incentive Structures
    • Change Management and Post-Merger Integration
  4. 4

    The Macro View

    • Market Dynamics and Game Theory
    • Corporate Governance and Stakeholder Management

4 sections · 8 units · 24 levels. Built to play, not to enroll.

How it's taught

You pick the voice

This course
The Professor

The Mechanics of Scale is taught in the The Professor style: clear, structured, thorough. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.

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