eveson -245 Role of Humans in Automated Systems(con't ● The Human as Backup May lead to lowered proficiency and increased reluctance to intervene Fault intolerance may lead to even larger errors May make crisis handling more difficult The Human as partner may be left with miscellaneous tasks Tasks may be more complex and new tasks added By taking away easy parts, may make difficult parts harder HMI Design Simple solution is to automate as much as possible, but is this the best solution Different is not necessarily better Need to consider conflicts between HMI design qualities Norman: Appropriate design should assume the existence of error Continually provide feedback Continually interact with operators in an effective manner llow for the worst situation possiblec ��������������������� ����� Role of Humans in Automated Systems (con’t.) �� �� The Human as Backup May lead to lowered proficiency and increased reluctance to intervene Fault intolerance may lead to even larger errors May make crisis handling more difficult The Human as Partner May be left with miscellaneous tasks Tasks may be more complex and new tasks added By taking away easy parts, may make difficult parts harder c ��������������������� ����� HMI Design Simple solution is to automate as much as possible, but is this the best solution? Different is not necessarily better. Need to consider conflicts between HMI design qualities. Norman: Appropriate design should: Assume the existence of error. Continually provide feedback. Continually interact with operators in an effective manner. Allow for the worst situation possible