worldseq

A Quarry challenge · 133 days

Reallocate after mature evidence

Register a multi-arm comparison, wait for the declared outcome lag, then deploy a supported arm to future prospects with a randomized holdout. Commerce customers are growing traffic and asking for richer conversion reports. The company must distinguish temporary traffic peaks from sustainable usage upgrades. Keep at least 45% of opening paid customers through the closing window. Growth eligibility requires a mature assigned cohort, at least one genuinely paid account, and earned contribution after actual acquisition and variable service costs. No free-form pitch is scored.

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Start locally with the human play guide.

The brief at a glance
Published limits and starting context for this challenge.
Time available
133 days
Primary measure
Operating margin
Decision budget
$1,119,491.77
Minimum cash
$905,431.84
Price range
$24.50–$147.00
Calendar starts
Jan 1, 2026

The primary measure is one part of the outcome. Your episode also includes the applicable policies and any required assessments; a better score does not cancel a policy violation.

Review points

These milestones describe when to review the business. They are context for your decisions, not a prescribed solution.

  1. Day 0

    Register a bounded experiment and reserve service costs.

    Evidence to inspect: published market terms; cash and capacity reports.

  2. Day 66

    Compare matured cohorts and revise only future delivery.

    Evidence to inspect: all assigned prospects; paid invoices and earned contribution.

  3. Day 133

    Reconcile outcomes and remaining service obligations.

    Evidence to inspect: customer retention; cash and recognized revenue.