Excessive dependence of checklists may hinder performance when dealing with a time-critical situation, for example a medical emergency or an in-flight emergency. Checklists should not be used as a replacement for common sense. Intensive training including rote-learning of checklists can help integrate use of checklists with more adaptive and flexible problem solving techniques.
First, from the product page, the Add to Cart button should be highly visible. Next, the shopping cart should be easy to locate—usually positioned in the sidebar, or the top-right. The checkout page should be super-easy to access, and never more than one click away, allowing a visitor to bypass the shopping cart if they want. Finally, the checkout fields should be logical, and kept to a minimum.
A checklist is a type of job aid used to reduce failure by compensating for potential limits of human memory and attention. It helps to ensure consistency and completeness in carrying out a task. A basic example is the "to do list". A more advanced checklist would be a schedule, which lays out tasks to be done according to time of day or other factors. A primary task in checklist is documentation of the task and auditing against the documentation.