Friendship Formula
Diagnose relationships through proximity, frequency, duration, and intensity
- Difficulty
- Moderate
- Time to result
- ~weeks to results
- Steps
- 5
- Confidence
- 99%
The Friendship Formula models every relationship through four elements: proximity, frequency, duration, and intensity. Proximity means having access to or being around the other person. Frequency is how often contact occurs. Duration measures how long each encounter lasts. Intensity captures the verbal and nonverbal cues that communicate a desire to deepen the relationship. When a friendship or professional connection weakens, the formula replaces a general feeling with a structured diagnosis. Review each element, identify what is missing, and increase the weakest appropriate lever. The four factors are related but distinct: frequent thirty-second encounters do not provide the same opportunity as longer contact, while long contact without emotional engagement may still lack intensity.
Origin
Jack Schafer describes the Friendship Formula as four elements present in all friendships.
Core principles
- 01Relationships need opportunities for contact
- 02Repeated contact matters separately from total time
- 03Shared verbal and nonverbal cues create intensity
- 04A weak relationship can be diagnosed by examining its component levers
How to run it
- 1
Check proximity
Determine whether you and the other person have enough opportunity to be in contact. If access has disappeared, create an appropriate recurring point of connection.
Pro tip Proximity can be physical or supported by deliberate communication when distance makes meetings difficult.
Watch out Do not manufacture proximity that violates the other person's boundaries.
- 2
Measure frequency
Ask how often you actually interact rather than relying on the relationship's history. Increase contact gently if long gaps are weakening familiarity.
Pro tip A small regular touchpoint may be easier to sustain than occasional bursts.
Watch out More contact is not automatically better if it is unwanted.
- 3
Review duration
Compare the length of your encounters with the depth you hope to maintain. Decide whether brief exchanges need occasional longer conversations.
Pro tip Distinguish frequent short contact from meaningful time together.
Watch out Long meetings without attention do not create useful duration.
- 4
Evaluate intensity
Look for verbal and nonverbal signals that both people want to deepen the connection. Add more attentive listening, openness, or shared experience where appropriate.
Pro tip Treat intensity as mutual engagement, not drama.
Watch out Never force intimacy faster than trust permits.
- 5
Adjust the weakest lever
Choose the weakest appropriate element and make one concrete change. Observe whether relationship quality improves before changing everything at once.
Pro tip Reassess all four levers after the change has had time to work.
Watch out The framework cannot repair a relationship that only one person wants.
In the wild
Two former colleagues still see each other several times a week, so proximity and frequency remain high. Their exchanges last less than a minute and never move beyond routine greetings, revealing weak duration and intensity. They schedule a relaxed monthly lunch and use the time for a real conversation.
→ The diagnosis directs effort toward the missing levers instead of adding more superficial contact.
Common mistakes
Confusing frequency with depth
Seeing someone often does not guarantee sufficient duration or intensity to sustain a close relationship.
Treating relationships as mechanical
The four levers support diagnosis, but mutual willingness and boundaries still govern every adjustment.
Is it for you?
Best for
People maintaining friendships, professional relationships, or other voluntary long-term connections.
Not ideal for
Relationships that are unsafe, coercive, unwanted, or constrained by boundaries the other person has set.
From the transcript
“the friendship formula is the basically there's four elements in all friendships and that's proximity frequency duration and intensity”
“I think the most important element is that intensity”
“you can identify relationships that are going bad and you could actually fix them using these four elements of a relationship”
From the episode
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