And also,the viewpoints of two German scholars,Dirk Helbing and Boris S Kerner,whose researches dominate the related fields,as well as their divergence of opinions,have been included specially.

• 其中最有影响力的就是德国学者Dirk Helbing和Boris S Kerner; 本文中特别讨论了他们两者各自的观点；及其主要分歧所在.