Close didn't somehow hypnotize Aiken. Aiken obviously was distressed enough by the team's fucked up tactics that he decided not to sign with the team. I'm sure he knows basic arithmetic. He made a rational choice not to be a member of the Astros organization and you necks need to heal your butthurt. In the wake of this colossal fuck up you guys want to blame Close, the union, Buster Olney, everyone but the party clearly responsible.
This is like arguing that people don't need attorneys, anyone can answer the prosecutor's questions. The decision is not simple arithmetic. I'm certain Aiken had questions such as:
What is my status if I turn down the offer?
Can the Astros draft me again?
Can I be a free agent? If so, what's my market value?
Where do you think I'd get drafted next year? What's the bonus pool look like?
Does talking to you affect my ability to go to UCLA? If so, what are my other option?
What is the Astros' position?
Is their position consistent with what other teams would do?
What has been your experience with Jeff Luhnow/Jim Crane? Can I trust them?
How much leverage do we have? Do they have?
The decison was Aiken's, but it wasn't made in a vacuum.