4
Sensemaking in Safety Critical and Complex Situations
FIGURE 1.4 Operator keyboard. ( Courtesy of Honeywell IAC.)
FIGURE 1.5 Hundreds of controller pages.
As the computer capabilities allowed, the HMI became a representation of the P&ID
drawings, as shown in Figure 1.6, often creating many pages and a navigation nightmare
(F igure 1.8). The screens were often colourful, with no human factor considerations.
Because of the lack of human factor understanding, many mistakes that are
well known today were common in the designs introduced in the early 1980s. For
Sensemaking in Safety Critical and Complex Situations
FIGURE 1.4 Operator keyboard. ( Courtesy of Honeywell IAC.)
FIGURE 1.5 Hundreds of controller pages.
As the computer capabilities allowed, the HMI became a representation of the P&ID
drawings, as shown in Figure 1.6, often creating many pages and a navigation nightmare
(F igure 1.8). The screens were often colourful, with no human factor considerations.
Because of the lack of human factor understanding, many mistakes that are
well known today were common in the designs introduced in the early 1980s. For