locations and processes . And machines can potentially benefit from this reworking of reinforcement learning, to make explicit that the reward comes from within the agent . Figure 3.1 from Sutton and Barto, 1998, Reinforcement Learning: An Introduction, MIT Press. Online: http://webdocs.cs.ualberta.ca/~sutton/book/ebook/node28.html So let’s trace the sensations of a food “reward”.