Dependencies are everywhere. They’re unavoidable. They aren’t inherently bad, but if you don’t consider the possibility a given dependency might not be met, you run the risk of frustrating your users. Reducing dependencies improves the likelihood that your site will be usable by the greatest number of people in the widest variety of scenarios. Even knowing this, however, it’s easy to overlook the most basic dependencies our projects have, undermining their resilience in the process. T...