public void AssertTwiceAndTestComparisonFact()
{
Fact fact = new ComparisonFact("Age", Comparison.GreaterEqual, 40);
this.world.AssertFact(fact);
this.world.AssertFact(new ComparisonFact("Age", Comparison.GreaterEqual, 40));
Assert.IsTrue(this.world.IsAFact(fact));
}