We name what they have in common

Building a greenhouse universe

After seeing more than one, it often becomes clear what kind of things we're looking at.

Naming that commonality can make it easier to talk about them together.

---

universe Greenhouse {
  describe { ... }

  concept TomatoPlant {
    describe { ... }
  }

  concept WateringCan {
    describe { ... }
  }

  concept BasilPlant {
    describe { ... }
  }

  concept Plants {
    describe {
      Living things that grow in the greenhouse.
    }
  }
}

---

This gives a name for what we're already seeing.

Continue with the tutorial