Guess my business

A shepherd was tending his flock in a remote pasture when suddenly a dust cloud approached at high speed, out of which emerged a shiny silver BMW. The driver, a young man in an Armani suit, Ferragamo shoes, the latest Polarized sunglasses and a tightly knotted power tie, poked his head out the window and asked the shepherd "Hey! If I can tell you how many sheep you have in your flock, will you give me one?"
The shepherd looked at the man, then glanced at his peacefully grazing flock and answered "Sure."
The driver parked his car, plugged his microscopic cell phone into a laptop and briskly surfed to a GPS satellite navigation system on Internet and initiated a remote body-heat scan of the area. While the computer was occupied, he sent some e-mail via his iPhone and, after a few minutes, nodded solemnly at the responses.
Finally, he printed a 150 page report on the little laser printer in his glove compartment, turned to the shepherd, waving the sheaves of paper, and pronounced “You have exactly 1,586 sheep."
"Impressive. One of my sheep is yours." said the shepherd.
He watched the young man select an animal and bundle it into his car. Then the shepherd said:
"If I can tell you exactly what your business is, will you give me back my animal?"
Pleased to meet a fellow sportsman, the young man replied “You’re on.”
"You are a consultant." said the shepherd without hesitation.
"That's correct," said the young man, impressed. "How ever did you guess?"
"It wasn’t a guess" replied the shepherd. "You drive into my field uninvited. You ask me to pay you for information I already know, answer questions I haven’t asked, and you know nothing about my business. Now give me my back my dog."