Ulysses’ Rings Factor

Ulysses’ Rings Factor

You may have heard of the “Bus factor” or the “Truck number”: the number of team members that can be run over by a bus, before the project they were working on must fail. Failure in this case comes because the rest of the team do not have the necessary knowledge to replace the lost members. […]

Interface design challenge: hidden in plain sight

Interface design challenge: hidden in plain sight

Interface design challenge: How do you present the same information to everyone, yet make sure parts of it are hidden to a select subgroup of viewers? The ANAR Foundation operates a helpline for children facing aggression and maltreatment. Minors at risk can call the number 116 111, which ANAR wanted to advertise and spread the […]

User-centered design: Lab or field observation?

User-centered design: Lab or field observation?

I’ll say it upfront: I’m a big fan of field & participant observation. I know, I know, getting people in the lab, under controlled conditions, with the latest and greatest observation technology seems “scientific”. Yet, ask yourself how much it changes the very thing you’re trying to observe. I’m not concerned about the user feeling […]

Spare your users the cognitive load

Spare your users the cognitive load

This is NOT about consuming their time and attention while they’re using your app. This is about draining their ability for logical thinking, problem-solving, and willpower after the clicking/swiping/gesturing is done.