Multiplying the plan by the patient list gives the usage for the upcoming days: [3 6 9 12 15]. Everyday multiplication (3 x 4) means using the plan with a single day of patients: [3] * [4] = [12].
Intuition For Convolution
Let's say the disease mutates and requires a multi-day treatment. You create a new plan: Plan: [3 2 1]
That means 3 units of the cure on the first day, 2 on the second, and 1 on the third. Ok. Given the same patient schedule ( [1 2 3 4 5]), what's our medicine usage each day?
