Five Sketches™

Many people are bad at estimating how often and how long they’re on the phone. Interestingly, you can predict who will overestimate and who will underestimate their phone usage, according to the 2009 study, “Factors influencing self-report of mobile phone use” by Dr Lada Timotijevic et al. For this study, a self-reported estimate is considered  accurate […]

When you’re researching users, every once in a while you come across one that’s an anomaly. You must decide whether to exclude their data points in the set or whether to adjust your model of the users.
Let me tell you about one such user. I’ll call him Bob (not his real name). I met Bob during […]