function simpleSetup () {
    const conditions = {
      any: [
        {
          name: 'over 21',
          fact: 'age',
          operator: 'greaterThanInclusive',
          value: 21
        },
        {
          fact: 'qualified',
          operator: 'equal',
          value: true
        }
      ]
    }
    engine = engineFactory()
    const ruleOptions = { conditions, event, priority: 100 }
    const determineDrinkingAgeRule = factories.rule(ruleOptions)
    engine.addRule(determineDrinkingAgeRule)
    // age will succeed because 21 >= 21
    engine.addFact('age', 21)
    // set 'qualified' to fail. rule will succeed because of 'any'
    engine.addFact('qualified', false)
  }
sets up a simple 'any' rule with 2 conditions