Trichotomy of Control
William Irvine's three-part expansion of the Stoic dichotomy, distinguishing what we fully control, partially control, and cannot control at all.
Also known as: Three-Part Control, Irvine's Trichotomy
Category: Principles
Tags: stoicism, philosophies, mindsets, well-being, personal-development
Explanation
The Trichotomy of Control is an update to the classical Stoic Dichotomy of Control, proposed by philosopher William B. Irvine in *A Guide to the Good Life: The Ancient Art of Stoic Joy*. While Epictetus divided things into just two categories — what is up to us and what is not — Irvine argues that a third, middle category is both more realistic and more practically useful.
**The Three Categories**:
1. **Things we have complete control over**: Our values, our character, our goals, the opinions we form, the effort we put in. These are entirely internal.
2. **Things we have some but not complete control over**: The outcome of a tennis match we play, whether we get a job after an interview, the quality of a relationship. We can influence these through our actions, but external factors also play a role.
3. **Things we have no control over**: Whether the sun rises, what happened in the past, other people's private thoughts, natural disasters.
**Why the Third Category Matters**:
The original dichotomy forces us to classify partially controllable things as either 'in our control' (leading to frustration when outcomes disappoint) or 'not in our control' (leading to passivity when action could help). The trichotomy resolves this by acknowledging the middle ground: we should invest effort while detaching from results.
**The Practical Strategy**:
For things in the middle category, Irvine recommends **internalizing your goals**:
- Instead of 'I want to win the match,' set the goal as 'I want to play my best'
- Instead of 'I want to get the promotion,' aim for 'I want to prepare the strongest possible case'
- Instead of 'I want them to like me,' focus on 'I want to be genuinely kind and interesting'
This way, you can fully control whether you achieve your goal (your best effort) even when you cannot control the outcome (winning, getting promoted, being liked).
**Comparison**:
| Dichotomy (Epictetus) | Trichotomy (Irvine) |
|---|---|
| In our control | Complete control |
| — | Some control (partial) |
| Not in our control | No control |
**Benefits**:
- More nuanced than the binary dichotomy — closer to how life actually works
- Prevents passive resignation over things we can partly influence
- Preserves ambition while removing attachment to outcomes
- Provides a clear action strategy: internalize goals for the middle category
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