PRODUCTIVITYDiagnostic — immediate.95% confidence

Fit, Grit, Wit (the It Factors)

The three signals Lubetzky looks for in a founder — and the order he learned them in.

Problem it solves

How to triage founder-bets when product, character, and creativity are all under-priced signals.

Best for

Founder selection, Shark Tank pitches, self-diagnosis of why effort isn't converting.

Not ideal for

Capital-intensive businesses where the bottleneck is funding, not founder traits.

Overview

Why this framework exists

**Grit** — does the founder lean in when it's tough? Resilience, work ethic, no-quit. **Fit** — does the product actually meet a real need better than the competition? Without product-truth, grit just buys you more time at the wrong door. **Wit** — creativity, resourcefulness, the strategic ability to go around when the door is closed. Lubetzky says he had infinite grit at PeaceWorks but no wit — he'd spend two hours forcing a wrong store on Broadway instead of triaging which stores to hit first. All three are required; any two is insufficient.

Core principles

3 total
  1. Grit without wit burns hours on the wrong door.
  2. Fit is non-negotiable — no work ethic compensates for a product that doesn't meet a need.
  3. Wit is migration strategy: which door first, which second, which to skip.

Origin story

How this framework came to be

Self-diagnosis from PeaceWorks: 'I had all the grit but no wit. I had no brainpower to realize that I was focusing hours of my invaluable time trying to get into the wrong store.' Now used as his Shark Tank investing filter.

Source

Traced to primary
Source · VIDEO
Daniel Lubetzky on School of Hard Knocks (full episode)
School of Hard Knocks Podcast · 2025
Open source →

Related frameworks

Browse all Productivity →