First Principle
First-principles thinking examines the facts, constraints, and starting assumptions behind a problem, then builds an approach from those foundations.
THE IDEA
2. First Principle
First-principles thinking breaks a problem into its basic elements and examines the assumptions behind a familiar approach. Establish which facts and constraints are well supported, and make any starting assumptions explicit.
Use those foundations to reconstruct an explanation or design. This can reveal alternatives to an existing method without assuming that every convention is wrong or that a new approach will necessarily work better.
When to use it
Engineering design: Breaking down a complex machine to basic physical and material principles to create a more efficient version.
Business strategy: Questioning every assumption about customer needs and business models to find a disruptive approach.
Personal decision-making: Analyzing a life dilemma by stripping away cultural or social expectations and focusing on core values.
Learning a new subject: Focusing on the fundamental theories and axioms rather than memorizing derived formulas or facts.
FROM THEORY TO EVERYDAY LIFE
In practice
Elon Musk and SpaceX
An account of Elon Musk’s approach at SpaceX contrasts the cost of raw materials, such as aluminum and copper, with the price of finished rockets. The comparison illustrates questioning a cost assumption, but it does not by itself explain launch costs or establish why they fell.
Product Redesign
A company looking to innovate its smartphone might apply first principles by questioning each component's fundamental purpose, leading to a completely new form factor or interaction method, rather than incremental improvements.
A MOMENT TO REFLECT
Put it to work.
Which facts or constraints in your problem are well supported, and which parts of your reasoning are assumptions?
How can you deconstruct a common practice or product in your field into its simplest elements?
What assumptions have you blindly accepted that could be challenged using first principles?
CONTINUE THE CONVERSATION
Source texts
- Thinking in Systems and Mental Models Think Like a Super Thinker (Dawson, Marcus P)