Constructor Theory: The Science of Can and Can't
A new fundamental framework that rewrites the laws of physics not as predictions of what will happen, but as statements about what transformations are possible and which are impossible.
The Prevailing Conception: Since Newton, physics has focused on initial conditions and laws of motion to predict trajectories. This works for planets, but fails for concepts defined by potentiality (Counterfactuals) like Information or Life.
The Task: The fundamental primitive is the "Task" (a transformation).
Core Axiom: A task is possible if a Constructor exists that can perform it and retain the ability to do so again. A task is impossible if physics forbids such a constructor.
Definition: An entity that causes change without changing itself.
Analogy (Catalyst): A chemical catalyst enables a reaction but isn't consumed.
Simple (3D Printer): A machine that builds a car from metal. The metal changes; the machine stays a machine. If the machine survives, the task is possible.
Unification: This framework unifies distinct fields. Information exists if the task "copy X to Y" is possible. Evolution is a constructor (DNA) coding for a vehicle to sustain itself. Physics becomes the map of the possible.