If your software product’s user interface doesn’t support _____, or support them well — your data won’t include _____ in your access logs. You could think they don’t visit often enough to include them in your team’s decisions about the interface. Instead, you can focus on segments of the population based on device, browser, OS, language and location, or any other criteria you feel are important and worthy of attention. It’s simple: make it work for the majority.
This is a blind spot. I call it the bias of the absent visitor. Since they’ve never come by, you can easily fall into assuming they don’t want to or need to use your interface. You might think you can just ignore them safely.
The reality is that they might have stopped by once or many times, had a terrible and unwelcome first experience, and have never come back. They could have seen a blank, white page instead of your carefully crafted design and content. Might have even told their friends not to bother.
This is one of my biggest blind spots. I hope that writing it down will motivate me to remember that the absent visitor is just as valuable as the typical one.
The Sensible Leader 