Logitech is a company that sells electronic hardware for teleconferencing (i.e., webcams, headsets, microphones, etc). The company is interested in the optimal location of its shopping cart icon and how it affects sales. Currently the shopping cart icon is in the top right corner of the companys website (see below). Suppose analysts at Logitech observe online sales for one week among two random groups of online shoppers. In a following week, website developers move the shopping cart icon to the top left corner for a new random group of online shoppers while keeping it in the initial spot (top right) for a separate random group of shoppers. Logitech wants to analyze data from this two-week period to learn if the shopping carts location matters.

Do you think the validity of this study would be vulnerable to any possible history effects? Explain why or why not.