Before revision:  Doing so allows us to relax some of the incorporated rather "heroic" assumptions  related to the (i) availability of information about the environment and the (ii) principal's and agent's cognitive capabilities (with a particular focus on their  memory).
After revision:  Doing so allows us to relax some of the incorporated rather "heroic" assumptions related to the (i) availability of information about the environment and the (ii) principal's and agent's cognitive capabilities (with a particular focus on their learning capabilities and their memory).