Søren Michael Sindbæk is Professor in the School of Culture and Society, Aarhus University. An expert in Viking-age archaeology, he is known for research on communication and social networks in early societies, and for groundbreaking excavations in the emporium of Ribe and the Borgring fortress, now a UNESCO World Heritage site.

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• 1. Strange attractors; 2. Conceit of hindsight; 3. Weak ties; 4. Sea change; 5. Settlement agreement; 6. Nodal points; 7. Small World; 8. Sites of intersection; 9. Legal Aliens; 10. Better strangers; Appendix 1. Comparative data for selected sites; Acknowledgements; References.

Søren Michael Sindbæk is Professor in the School of Culture and Society, Aarhus University. An expert in Viking-age archaeology, he is known for research on communication and social networks in early societies, and for groundbreaking excavations in the emporium of Ribe and the Borgring fortress, now a UNESCO World Heritage site.

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• 1. Strange attractors; 2. Conceit of hindsight; 3. Weak ties; 4. Sea change; 5. Settlement agreement; 6. Nodal points; 7. Small World; 8. Sites of intersection; 9. Legal Aliens; 10. Better strangers; Appendix 1. Comparative data for selected sites; Acknowledgements; References.

Søren Michael Sindbæk is Professor in the School of Culture and Society, Aarhus University. An expert in Viking-age archaeology, he is known for research on communication and social networks in early societies, and for groundbreaking excavations in the emporium of Ribe and the Borgring fortress, now a UNESCO World Heritage site.

Select Guide Rating

• 1. Strange attractors; 2. Conceit of hindsight; 3. Weak ties; 4. Sea change; 5. Settlement agreement; 6. Nodal points; 7. Small World; 8. Sites of intersection; 9. Legal Aliens; 10. Better strangers; Appendix 1. Comparative data for selected sites; Acknowledgements; References.