Google recently appointed an external ethics council to deal with tricky issues in artificial intelligence. The group is meant to help the company appease critics while still pursuing lucrative cloud computing deals.

In less than a week, the council is already falling apart, a development that may jeopardize Google's chance of winning more military cloud-computing contracts.

On Saturday, Alessandro Acquisti, a behavioral economist and privacy researcher, said he won't be serving on the council. "While I'm devoted to research grappling with key ethical issues of fairness, rights and inclusion in AI, I don't believe this is the right forum for me to engage in this important work," Acquisti said on Twitter. He didn't respond to a request for comment.