Figure 1-4 Mistake-Proofing the Design of Health Care Processes - Figure 1.4. Illustration of an elevator brake Note: Elisha Otis made elevators safe by installing an elevator brake. Otis and his invention are widely credited with making skyscrapers feasible.Photo: ©2003 James E. White, Taletyano Press. Used with permission.Return to Document Current as of May 2007 Internet Citation: Figure 1-4: Mistake-Proofing the Design of Health Care Processes -. May 2007. Agency for Healthcare Research and Quality, Rockville, MD. http://www.ahrq.gov/professionals/quality-patient-safety/patient-safety-resources/resources/mistakeproof/mistakefig1-4.html