Light rain is not heavy rain

Now send light rain and heavy rain through the same connection.

If the input only has two possible values, both rainy days arrive as 1:

light rain: 1 × 0.8 = 0.8

heavy rain: 1 × 0.8 = 0.8

The neuron receives the same number in both cases. It cannot tell light rain from heavy rain.

Keep the weight at 0.8, but allow the input to use numbers between 0 and 1:

light rain: 0.2 × 0.8 = 0.16

heavy rain: 1 × 0.8 = 0.8

Now the two cases reach the neuron differently.