Sprig & Prose

A small system for describing worlds and observing how systems respond to them.

A tiny example

universe Garden {
  describe {
    A small garden with a few plants.
  }

  concept Plant {
    describe {
      A living thing that grows over time.
    }

    dimension species {
      describe {
        Plants come in many different varieties.
      }
    }

    species TomatoPlant { }
    species BasilPlant { }
  }

  relationship hydrates and isHydratedBy { }

  concept Watering {
    describe {
      Giving water to a plant.
    }

    relationships {
      hydrates { Plant }
    }
  }
}

This describes a world.

What this system is

Sprig and prose separate two concerns.

prose describes a world:

• what exists
• how things relate
• what patterns are possible

sprig observes systems:

• reads a universe
• compares it to real systems
• produces simple receipts of what is true

How to read this

You can start in either place:

• Read prose to understand the language
• Read sprig to see how systems participate