FOUNDING YEAR: Every finished Gravity System digital product is available through October 1, 2027 — no purchase required, and physical supplies will always be optional.
The Gravity SystemThe Gravity SystemPublished by Thomas Monroe Books
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Complete system • Founding Year access

Gravity Sales Intelligence & Forecasting System

Turn daily sales history, local events, weather, school schedules, promotions, traffic conditions, guest counts, and labor hours into evidence-based forecasts and better staffing decisions.

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Why it matters

Sales reports show what was sold. This system helps preserve why it happened.

The system creates a searchable history of the conditions that shaped each trading day. It can compare the annual car show, festival, local parade, school calendar, weekday or weekend placement, temperature, rainfall timing, traffic, promotions, guest demand, and labor requirements across multiple years.

The longer the system is used consistently, the stronger its comparable-day library, event intelligence, labor standards, forecast accuracy, and recorded operating knowledge become.

Everything is included at no cost.

Release 1.2 contains the complete operating package in editable and print-ready formats.

  • 13-page operating manual
  • 40-item Complete Capability Index
  • 30 printable management tools
  • 14-sheet digital control workbook
  • 7,658 formulas
  • 20-slide training presentation
  • Manual and forms in DOCX and PDF
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Complete capability overview

What the system can do

The operating manual contains the full capability index with the specific workbook sheet or form responsible for each function.

  1. Record daily sales, guests, average check, labor, weather, school status, events, promotions, operating conditions, and next-year lessons.
  2. Correct any historical day while preserving the original understanding and amendment evidence.
  3. Search recurring car shows, festivals, parades, school events, sports, holidays, and community events across years.
  4. Automatically identify the weekday and weekday/weekend class of each event occurrence.
  5. Compare event timing, attendance, temperature, rain, traffic, sales, guests, and labor.
  6. Preserve school-calendar effects and recurring local demand patterns.
  7. Document promotions, pricing changes, lift, channel effects, and margin implications.
  8. Document outages, closures, construction, staffing restrictions, and capacity disruptions.
  9. Find comparable trading days using weekday, season, calendar, weather, promotion, event, capacity, and channel.
  10. Score comparable days and approve weights, selections, and exclusions.
  11. Build daily sales forecasts from visible, documented adjustment layers.
  12. Publish low, most-likely, and high forecast ranges.
  13. Assign high, medium, or low confidence based on evidence quality.
  14. Forecast guests and average check separately.
  15. Forecast sales and guests by part of the day.
  16. Forecast dine-in, takeout, delivery, catering, and other channels.
  17. Calculate sales-based labor hours using sales per labor hour (SPLH).
  18. Calculate guest-based labor hours using guests per labor hour (GPLH).
  19. Protect minimum role and time-of-day coverage.
  20. Add opening, closing, prep, cleaning, receiving, meeting, and training work.
  21. Add catering, festival, party, delivery, and event workload.
  22. Recommend labor hours using the strongest justified workload requirement.
  23. Compare recommended hours with scheduled hours before finalizing the schedule.
  24. Project forecast sales per labor hour.
  25. Translate forecast demand into prep quantities, yields, labor minutes, timing, and ownership.
  26. Analyze sales, guests, average check, labor, and sales per labor hour (SPLH) within the selected fiscal year.
  27. Separate guest-count, average-check, price/mix, channel, and disruption effects.
  28. Calculate date-based 7-, 28-, and 90-day trends.
  29. Calculate remaining sales to goal and the required average daily sales rate.
  30. Measure forecast dollar error, percent error, and absolute percent error.
  31. Measure repeated over- or under-forecasting.
  32. Measure the percentage of reviewed days inside the approved tolerance.
  33. Measure forecast labor versus actual labor.
  34. Track assumptions, evidence, confidence, expiration, revisions, and approvals.
  35. Assign corrective actions, owners, due dates, status, and verified results.
  36. Provide an executive dashboard for year-to-date results, goals, forecasts, labor, accuracy, repeated over- or under-forecasting, and controls.
  37. Standardize controlled forecasting and labor terminology.
  38. Preserve recorded operating knowledge when experienced managers leave.
  39. Improve the comparable-day and event-history library with every completed day.
  40. Build a stronger local forecasting advantage over multiple years of disciplined use.
Individual files

Download the entire system or only what you need.

Operating Manual

Instructions, control rules, labor method, capability index, operating schedule, implementation sequence, and glossary.

PDFDOCX

Printable Forms

Thirty coordinated management forms for intelligence capture, forecasting, labor, review, and learning.

PDFDOCX

Digital Control Workbook

Searchable Event History, Daily Revision Log, forecasts, labor demand, year-to-date results, accuracy, calendar, action log, glossary, and dashboard.

XLSX Workbook

Training Presentation & File Guide

Use the presentation to teach the complete workflow and the file guide to understand every download.

PPTXFile Guide
Record the day. Preserve the lesson.

The longer the system is used, the smarter the restaurant becomes.

No fixed forecast-accuracy percentage is guaranteed. Accuracy depends on the quality, consistency, relevance, and length of the restaurant's data history.

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