Table 3. Sensitivity of the performance of a system to differences in centrality. Centrality   Advantages       Disadvantages     High   Efficient coordination when solving simple tasks (see Langan-Fox 2001 and references therein) Potential to be more accountable, i.e., the central actors can to some extent be held responsible for the group   Reduced distribution of information (e.g., Shaw 1981)     Possible perception as undemocratic and unfair     Greater vulnerability to targeted attacks (Albert et al. 2000)   Low   Possible perception as more fair and open to group participation   Possible lack of control and accountability Inefficiency when solving simple tasks   Robustness to removal of nodes (e.g., social leader or species)     High group efficiency when solving complex tasks (see Langan-Fox 2001 and references therein)