Figures & data
![A photograph of the public sculpture Stroll (1995), by William King, located on the South Street walkway at Penn's Landing in Philadelphia, serves as a metaphor for the simple dynamics of all swarm behavior: follow the trail of the individual in front of you, and keep pace with the individual alongside you. Photo by James Haywood Rolling Jr.](/cms/asset/86d31f39-62a3-4701-b262-da5a4b6397a9/uare_a_1201400_f0001_c.jpg)
Register now or learn more
Free access
Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?
To request a reprint or corporate permissions for this article, please click on the relevant link below:
Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?
Obtain permissions instantly via Rightslink by clicking on the button below:
If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.
People also read lists articles that other readers of this article have read.
Recommended articles lists articles that we recommend and is powered by our AI driven recommendation engine.
Cited by lists all citing articles based on Crossref citations.
Articles with the Crossref icon will open in a new tab.