Slides from a 5 minute lightning talk given as part of a University of Cambridge Information Service Staff Seminar, December 2015

1. Original image: Shredex
Dunbar's Number
and what it means
for the UIS
Jon Warbrick

2. 150

3. 150 = 100101102 = 21124 = 11005
each using 2 different digits
an equal number of times

4. Photo: Robin Dunbar
British anthropologist and evolutionary
psychologist
PhD at University of Bristol
University of Cambridge from 1977 until
1982 (Department of Zoology)
University College London from 1987 until
1994
Professor of Evolutionary Psychology at
University of Liverpool 1994 until 2004
Director of the Institute of Cognitive and
Evolutionary Anthropology, University of
Oxford, 2004

5. "Neocortex size as a constraint on group size in primates".
Journal of Human Evolution 22 (6): 469–493, 1992

7. 150

8. 100

9. 130

10. 250

11. Photo: Steve Fareham

15. Photo: Buck

16. Photo: Buck
D _ v O _ _ ?