Hci Quotes

While any software system introduces some kind of formalization of the world, HCI (like AI) deals with formalizations of human cognition and activity. These are the issues that have lay at the heart of philosophical debate for centuries. In some ways, it would be hard to imagine a more philosophical enterprise.

The separation of the fields of AI and human-computer interaction, or HCI, is partly a question of approach, but it’s also an ethical stance about designing humans either into or out of the systems we create.

0.1 second: This is the limit for perception of cause-and-effect between events. If software waits longer than 0.1 second to show a response to your action, cause-and-effect is broken: the software’s reaction will not seem to be a result of your action. Therefore, on-screen buttons have 0.1 second to show they’ve been clicked; otherwise users will click again. If an object the user is “dragging” lags more than 0.1 second behind the cursor, users will have trouble placing it. This 0.1-second deadline is what HCI researcher Stuart Card calls the perceptual “moment.” It is also close to the limit for perception of smooth animation: 0.063 second/frame (16 frames/second)

Here is how HCI projects are typically done: 1. Observe people to find out what their real problems are. 2. Design innovative tools to help alleviate those problems. 3. Experimentally evaluate the tools to see if they actually help people

Here’s the list of the tests you need to make sure your doctor orders: lipid profile (LDL-C, HDL-C, TG), homocysteine (Hcy) level, alanine aminotransferase and aspartate aminotransferase (ALT and AST), uric acid, fasting insulin, fasting glucose, and hemoglobin A1c.