Hi, I have a question. I’m doing some basic exploration/learning of clara and rules engines and I’m making a small app that tells you what to wear, depending on the weather. For example, I have rules like these:

(defrule precipitation-more-than-20%-chance
  "keep your head dry"
  [Weather (>= precipitation 20)]
  =>
  (insert! (->Hat :bucket-hat)))

(defrule above-70-wear-a-sun-hat
  "If it's warm, the sun might be in your eyes"
  [Weather (>= temperature 70)]
  =>
  (insert! (->Hat :straw-hat)))

Perhaps instead of having the precipitation-rule insert a hat fact. Have it insert a "it-will-rain" fact. And then have the hat rules test against that fact

ah interesting. I’ll look into that.

There are different ways to achieve it, not sure what the "best" way is

You can keep it that flow and have another rule that decides what hat to wear and pulls in all the hat facts

logically, you want to make decisions based on the properties of hats, rather than just being categorized as a "hat" (what is a hat, really?). some hats provide shade, some don't. some hat's provide rain resistance, some don't. etc.

A temperature of 70 could still be a cloudy and rainy day

That could have just been a simplified example but just something to keep in mind lol

and there's a difference between finding the "optimal" outfit based on the weather and finding all "acceptable" outfits.