Before revision:  They allow us to recover (from a sequence of observed choices) the ranking of preferences of each person , the attention mechanism , and the set of connections or nodes between the people in the network . The identification strategy we offer does not rely on the variation of the set of available options (or menus) which remain the same across all the observations .
After revision:  They allow us to recover (from a sequence of observed choices) the ranking of preferences of each person , the attention mechanism , and the network connections. These identification results allow unrestricted heterogeneity across people and do not rely on the variation of the set of available options (or menus) which remain the same across all the observations .