Possible Clues:

• Lack of ability in role
• Impotence of father visiting Cuzco perhaps
• Weakness of urban housing control
• Weakness — old empire builder quick to conceal it
• Powerlessness from awkward panic attack heading to Dublin
• Lack of ability shown by language associated with Philadelphia?
• Lack of resources to install secretary in Cuzco?
• Disability of old man in Machu Picchu, say?
• Powerlessness to back Ulster taking Common Agricultural Policy to a municipal centre
• Lack of authority to employ secretary in Cuzco, say