public void Can_model_binary_Nand(bool expected, string descr, params double[] fixedInputSensors)
        {
            var inputs = SensorNeuronBuilder.WithValues(fixedInputSensors);
            //
            bool isOn = SigmoidNeuronBuilder.Nand(inputs).FiringRate.AsSigmoidToBool();

            //
            isOn.ShouldBe(expected);
        }