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Put two types side by side.
Pick up to four types and see them stacked — cognitive stack, strengths, blind spots, behavior. Good for relationships, co-founder checks, or knowing yourself.
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Comparison
ISTP
ISTP
The Engineer
Builds it. Fixes it. Flies it.
Cognitive stack
Ti
Introverted ThinkingDominant
Se
Extroverted SensingAuxiliary
Ni
Introverted IntuitionTertiary
Fe
Extroverted FeelingInferior
Dimensions
IIntroversion
SSensing
TThinking
PPerceiving
Strengths
- Hands-on mastery
- Live troubleshooting
- Calm under physical stakes
- Independent operator
- Efficient problem sense
Blind spots
- Avoids feelings talk
- Resists long planning
- Disappears under stress
- Commits late and slow
- Undersells his own craft
How they think
Understands by doing. Opens the thing, traces the signal, finds the break. Abstract talk without a working prototype bores him fast, and meetings about meetings empty him even faster.
In relationships
Love is the tuned engine, the fixed thing, the steady hand on the back of your neck. Not a big talker about feelings. Needs a partner who respects silence without reading rejection into it.