private bool EvaluateCondition(IExpression expression) => QLExpressionEvaluator.AsBool(QLExpressionEvaluator.Evaluate(expression, GetAnswer));
public void Visit(ComputedQuestion question)
{
_answers[question.Id] = QLExpressionEvaluator.Evaluate(question.Computation, GetAnswer);
AddQuestion(question, true);
}