Anticryptography
We all know what cryptography is: cryp·tog·ra·phy, n. 1. the science or study of the techniques of secret writing, esp. code and cipher systems, methods, and the like. Cf. cryptanalysis (def. 2). 2. the procedures, processes, methods, etc., of making and using secret writing, as codes or ciphers. 3. anything written in a secret code, […]
Icons, Pedagogic Vectors, Forms Design and Posture
Icons and Pedagogic Vectors We all have trouble remembering a program’s graphical icons. The International Standards Organisation (ISO) has a standard for icons – an icon must be interpreted correctly by 2/3 of test subjects. In usability and error-prevention terms, a 1/3 error rate is poor, but reality is even worse – an experimental study […]
Performance, Data Pixels, Location, and Preattentive Attributes
A good principle for medical software is to design for the ED as a worst-case scenario. If it works there, it will work anywhere.No clinicians are as time-pressured as those in a busy Emergency Department. There, distractions – even seemingly minor ones like presenting a complete CBC instead of an abstract – slow the clinician […]