Salah and Abdullah Khashoggi, who called their father "courageous, generous and very brave," said they have endured weeks of anguish and uncertainty following his disappearance and death. Read More

Relative Primitives. Regarding the nature of the primitive components of a complex system, our experience suggests that: The choice of what components in a system are primitive is relatively arbitrary and is largely up to the discretion of the observer of the system.