Unfortunately, not all writers, trainers, product designers, or even physicians can keep up with all the scientific developments. Here are examples of conventional ergonomic wisdom that are being disproven. Current ergonomics encourages variety and movement rather than an exact posture. Conventional wisdom for monitor distance is that it should be 18-24 inches away. This is wrong.
Longer distances relax the eyes.
Conventional wisdom for monitor height is that the top of the screen should be about at eye height. This is fine for some people, wrong for many. The current recommendation is that eye height is the highest a monitor should be, not the best height. Many people find a low monitor to be more comfortable for the eyes and neck. Authors on the site are Certified Professional Ergonomists and Certified Industrial Ergonomists who have consulted in this field for years, and have been involved in the development of national and international ergonomics standards.