In a harsh environment characterized by straightforward challenges that demanded quick responses, an indecisive caveman was a dead one.
Living alone was seen as a challenge that had demanded rethinking his routines of daily living, so Ben had decided to increase his participation at the day care center.
Today's work environment presents engineers with complex challenges that demand holistic approaches.
The high heat fluxes dissipated by WBG devices pose extreme cooling challenges that demand the use of advanced thermal management technologies such as two-phase cooling.
It's become a trendy managerial acronym: VUCA, short for volatility, uncertainty, complexity, and ambiguity, and a catchall for "Hey, it's crazy out there!" It's also misleading: VUCA conflates four distinct types of challenges that demand four distinct types of responses.
When federal transportation officials demanded that New Jersey repay money already spent on the project, Mr. Christie hired Patton Boggs, a Washington law firm, to challenge that demand.
This is a challenge that demands the kind of presidential leadership the country has not seen in almost a decade.
The study of the mechanical behavior of the muscles constituting the pelvic floor is a challenge that demands multidisciplinary efforts.
Now its opponents face a challenge that demands endurance and strategic calculation, an unwillingness to fall further into a trap where politics ends and the forces of chaos inevitably triumph.
In an era in which mental health professionals are beginning to recognize the significant costs [ 35] associated with this psychiatric syndrome, understanding the relationship between critical illness and PTSD is a challenge that demands attention and better designed studies [ 31].
Understanding the nature of the relationship between critical illness and PTSD is a challenge that demands attention, particularly in an era when mental health professionals are beginning to recognize the significant and sometimes profound costs (interpersonal, vocational, medical, and financial) associated with this psychiatric syndrome.
