通过博客和好心人的帮助，麦克唐纳在分类网上共进行了14次物品交换，每次通过交换不断给物品升值，终于在一年之后换到了房子。
Through his blog and thekindness of strangers, MacDonald made 14 swaps over the classifieds website, upgrading one item to a more valuable one until he ended up with a house a yearlater.
在这里输入译文华盛顿大学神经学科研指导，同时也是这项科研的另一位发起人克莉丝汀L.麦克唐纳说道，这一扫描技术目前仅仅是一种科研工具，并没有被普及应用。
Christine L. MacDonald, a research instructor in neurology at Washington University and another author of the study, said the scans were still a research tool and not ready for widespread use.
“他的观点就是，和从守门人起的每一个人培养感情。”麦克唐纳先生评论道。
"His philosophy was to cultivate everybody from the doorkeeper up," Mr McDonald remarks.
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