People with visual agnosia may be unable to recognize, draw, or recall how to use objects even with properly functioning eyesight. There are two sub-types of this condition. Less than 1% of people ...

When searching for your flashlight in a tent at night, you must rely on tactile information to identify objects. The visual representation of the shape of your flashlight might facilitate your search.

Peter starts off with a perfectly good solution to a problem but then complicates the problem . . . and ends up moving to a different design pattern. While on that journey he has some best practices ...

In a previous column I discussed all the reasons for creating read-only objects and how they could simplify your applications (in fact, I recommended that creating a read-only object should be your ...