Building the environment inside a simulation

This section is quite special, because there's something crucial to understand which is not obvious at first sight. The reason for this warning is my experience in teaching this subject; many of my students had issues understanding why we have to do a simulation here, for this whole problem.

It was the same for me when I started! If you already understand why we have to make a simulation, that's great—it means you already have online learning under your skin. If not, follow me here and let me explain carefully.

To understand, let's start by explaining what would happen in real life: you would simply display the "call to action" pop-up ad of one of the nine strategies to customers who are navigating the website, and you'd do this one customer at a time. You'd have to do it one customer at a time, customer after customer, because for each customer you need to collect their response...