Human collective intelligence (HCI) and Artificial agent based models (ABM) have become popular in computational social system science literatures, however, until recently, there are very few opportunities for both social system scientists and computer scientists to meet together to discuss complex social decision problems such as city management, education, marketing, finance, and traffic systems. There exist so many stakeholders in social complex decision problems. To address the issues, it is indispensable to gather both social system scientists and computer scientists together. We must advance new theory and techniques to marriage HCI and ABMs.