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276 O. Barreteau et al.

Fig. 12.1 Individual
involvement A1

A2

A3

A4
M
A5

A6

A7

Fig. 12.2 Homogenous
group involvement
A1
A2

A3

A4
M
A5

A6
A7

Some other ways are currently explored with hybrid agents to technically
overcome the difficulty of dealing with representatives: by involving them all in
large systems. The internet or mobile phone networks provide the technical substrate
for such interaction. A large number of participants have a virtual component in
a large system, interacting with other components, possibly with the purpose of
building a model (Klopfer et al. 2004). However, in this case it is rather an individual
interaction of these participants with the system, than genuine interactions among
the participants.