Module 03 — Actor-oriented Picos

Actor model (only what is needed)

          message
             │
             ▼
        ┌─────────┐
        │  Pico   │
        │  state  │
        └─────────┘
             │
             ▼
          response

Properties

Property	Pico meaning
Identity	Addressable Pico id
Encapsulated state	Only the Pico mutates its state
Message handling	invoke(event, payload)
Serialized execution	One event at a time per identity
Location transparency	Caller need not know which machine
Lifecycle independence	State can outlive a process

Exercise

Explain in one paragraph why hello-pico/alice and hello-pico/bob are different Picos even when they share the same code.