From their birth in 1994, the Taliban have relied upon their ability to move freely between Kandahar, Baluchistan and Karachi.
What has changed, however, is that physicians are now being judged, and compensated, based upon their ability to do it.
Their pay is based on a bouns system, and depends upon their ability to bring buses in on scheduled time, and their ability to avoid accidents.
Shamans were not required to take every case, as their reputation depended upon their ability to cure; among the Teton they could refuse after examining a patient.
Dependent for survival upon their ability to prey upon living animals in a variety of situations, carnivores have evolved a relatively high degree of learning ability (see animal learning).
But as well as stepping up to their duty of care to protect human life, NGOs must factor in risk to capital assets (damage or loss), which can seriously impact upon their ability to work.
In many ways, they are very similar: two old-style, pro-business, prep-school Republicans, whose career advancement has depended upon their ability to attract the support of right-wing ideologues.
The Chinese authorities' claim to legitimacy rests upon their ability to provide economic wellbeing, which is proving increasingly tough, and this idea of renewed national pride, seized and amplified by Xi Jinping since he took power.
The future hinges not only on the ability of Greece, Turkey and other countries to escape the deep economic crisis but also upon their ability to respond effectively to global climate change.
Piano tuners depend in part upon their ability to hear these tones in a reliable way when tightening and loosening the strings in order to reach the correct pitch on the instrument.
