Tag Archive for user errors

Anchoring Errors, Background Knowledge Errors, Diagnostic Errors, Errors, Newsletter, Perception, Users

Human Limitations

by Olga Werby • August 6, 2025

We live in a vast universe that spans enormous scapes of time and space. But humans evolved to understand information in relatable quantities at a human scale. We conceive landscapes mostly in chunks we can easily walk, connected loosely by strands of distances we can comfortably drive. We live in the now, but relate to the future in terms of a past that we dimly remember. We can make plans just within a very narrow scope of time — days, perhaps weeks. The future is always elusive and vague. We don’t comprehend spans of time outside of our experience. The span of a million years, ten million, a hundred million, or even just a thousand are concepts which we can intellectualize about but can’t really feel. Even in our interactions as members of a species, we can each just maintain a web of a few dozen relationships. Space, time, and human interactions are limited for us. We don’t process and, thus, don’t truly comprehend, information of large or very small scales that are beyond our direct experience. It’s not who we are as humans. This has all sorts of ramifications beyond the obvious. It’s why it’s easy for us to…

The Fragility of Normal

by Olga Werby • February 12, 2023

Fortune: May you live in interesting times

We all want to go back to normal. We cry about it and complain: “Enough is enough. We want our lives back.” This need to “go back to normal” is always with us, although maybe on a different scale post-pandemic. But even before Covid, there were always things that disturbed our perception of normal: new teachers, new housing, new jobs, new routines, stores and restaurants closing, cars that break down, challenging illnesses, new bus routes. Towards the end of our vacations, we come to realize that, although adventures are fun, it is good to be home where things are as we expect them to be. This want of predictability, for having our expectations met, is at the crux of a deep-seated need for normalcy. We have a limited capacity for taking in and processing information — we have limited short-term memories. When there is a flood of unfamiliar data, we get overwhelmed. We end up not having enough cognitive and emotional capacity to handle the new stuff on top of all the other things we have to do. Sudden change makes life feel overwhelming. Anchoring Errors This brings me to anchoring errors, which are basically little cognitive traps our minds…

Inattention Errors in Extemporaneous Writing

by Olga Werby • April 3, 2016

Automation provides many opportunities for inattention errors. Extemporaneous writing/typing is particularly prone to errors so egregious that they are funny… in retrospect. Here are a few examples of “scary” autocorrect mistakes as well as other problems caused by limited or spit [sorry, that was “split”] attention on the task of communication. 1. Everyone fails sometimes It is easy to fail when we are in a hurry, or are under pressure, or don’t proofread our work before it goes out. Some fails are the result of trying to be too clever and not getting a second opinion. Some fails are due to lack of process — a second pair of eyes on the copy would have noticed the “extra word” problem. Some fails are easily caught via a spellchecker… But in some cases, a spellchecker does help… And in many cases, spellcheck is the CAUSE of strange communications. I had a few of those myself… 2. Errors are different from mistakes Mistakes are things that we know are wrong the moment we notice them — the head-slappers! They are usually caused by inattention on the task. Errors are different. Errors result from true ignorance. But it doesn’t make the resulting fails…

Language and Cultural Differences in Communication

by Olga Werby • November 6, 2013

Above is an example of Interface Design — Kulula Airlines decorates its planes in a very playful manner. Does this choice make you feel safer or more reticent to fly their planes? Well, that depends… Consider the FAA Passenger Briefing Guidelines: 14 CFR 91.519. Below are a few examples: § 91.519 Passenger briefing. (a) Before each takeoff the pilot in command of an airplane carrying passengers shall ensure that all passengers have been orally briefed on: Smoking. Each passenger shall be briefed on when, where, and under what conditions smoking is prohibited. This briefing shall include a statement, as appropriate, that the Federal Aviation Regulations require passenger compliance with lighted passenger information signs and no smoking placards, prohibit smoking in lavatories, and require compliance with crewmember instructions with regard to these items; Use of safety belts and shoulder harnesses. Each passenger shall be briefed on when, where, and under what conditions it is necessary to have his or her safety belt and, if installed, his or her shoulder harness fastened about him or her. This briefing shall include a statement, as appropriate, that Federal Aviation Regulations require passenger compliance with the lighted passenger sign and/or crewmember instructions with regard to…

Colorblindness Test on iPhone Google Traffic Map

by Olga Werby • August 27, 2013

2013 iPhone Traffic Google Map Colorblind Test

Google Traffic Map on an iPhone (or any other mobile device) is a great product… unless you are colorblind. Then, it’s a nightmare! 5% to 20% of the population has some kind of color processing disorder. Here is a simple test if you are one of those. Which of the following look the same to you? Click on the image above to enlarge. Red/green confusion — Protanopia: red/green color blindness, no red cones; Deutanopia: red/green color blindness, no green cones; Protanomaly: anomalous red cones; Deutanomaly: anomalous green cones — are the most common visual processing problems. But there is also blue blindness — Tritanopia: blue/yellow color blindness, no blue cones; and Tritanomaly: anomalous blue cones. The most rare cases are the monochrome colorblindness, the true loss of color — Achromatopsia: low cone function; and Atypical Achromatopsia: low cone function with some color. As designers, we have to be aware of our audiences’ limitations and strength. And visual processing and comprehension is no exception. In the past, I’ve written about colorblindness: . But unfortunately, the site that helped identify problems with design doesn’t seem to work. Here’s a new sit e for your reference: Colorblind Web Page Filter If you are…

Same Desire, Cultural Shift in Solution

by Olga Werby • December 6, 2012

Over time, some desires have stayed constant: an aversion to pain, a wish for health, a longing to be loved, and a craving for wealth, power, and youth. But desires are susceptible to cultural shifts, and so they shift with the whim of fashion: the need to be thin, the hope to fit the norms of current beauty, the yearning for popularity, an aspiration for fame. Each generation comes up with solutions for their desired that are based in the cultural soup that nourished them. What is a cultural soup? Well, it’s a heady mixture of the following: anxiety — each generation has their own issues that they loose sleep over. In addition to the ones that their parents experienced, each generation can choose and pick and invent their own worries. affordances — affordances are available actions that are mired in context and situation. As context changes, affordances evolve. Each generation sees a unique subset of problem solutions. emotional design — each generation is stirred by issues and fashion that are uniquely their own. Emotional design is by definition tied to a particular group of people, be they joined in time, cause, or geography. Social value, user satisfaction, and emotional…

Haptics and the Uniformity of Gloss

by Natesh Daniel • November 7, 2012

For an introduction into the science of haptics, the article, “Primal, Acute and Easily Duped: Our Sense of Touch,” provided great examples about the accuracy and fallibility of our sense of touch. However, the proliferation of touch-sensitive input devices over the past 4 years since it was written didn’t provide the author with any insight into their pending popularity, or the effect they would have on our fingertips. If our fingertips can feel a bump the thickness of one micron, imagine the sensitivity they have even as they slide over a touch-sensitive glass tablet, a glossy plastic mouse, or an anodized smooth track pad. The more our fingertips are required to touch, drag, swipe, and pinch, even over smooth surfaces, the more abrasive those surfaces become over time and the more those subtle abrasions wear on our skin. Glass becomes scratched, plastic becomes scuffed, and biological stains build up on anodized aluminum along with all other surfaces. The point being that these smooth surfaces end up hurting, if not annoying, our fingertips over time. If the fingertips are the equivalent of the fovea of our eyes, why subject ourselves to these increasingly painful disturbances and not return to using an…

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Tag Archive for user errors

Attention, Background Knowledge Errors, Errors, Language, Perceptual Blindness, Pipsqueak Articles

Inattention Errors in Extemporaneous Writing

by Olga Werby • April 3, 2016

Contributor, Interface Design, Perception, Product Design Strategy, Users

Haptics and the Uniformity of Gloss

by Natesh Daniel • November 7, 2012