Poor Ernest 9.3

On step 406, we removed the yellow-green landmark that Ernest was using to find his way towards the southeast field. This leaves poor Ernest spinning in place, miserably goalless.

To explore space in the absence of landmarks, Ernest will need some skills to construct a spatial representation of the environment. Such skills are exhibited by most vertebrates and are believed to involve some basic components of the vertebrate's brain. We now need to explore the role of these components.