You can plot the transformation of the space in a very distinct cycle denoted by the diagrams below. There is a very clear cycle that relates to Foucault’s ‘Dispositif’ model of space. Foucault uses 3 points to explore complex situations:
1 - Establish and ‘emergency’ or ’situation’
2 - Establish ‘rules’, ‘plan’ or ’strategy’
3 - Develop a ‘pattern’
These can be mapped to the cycles I have demonstrated below in that the ’situation’ is the decay or lack of use of the space, the ‘rules’ are the plans for the redevelopment and the ‘pattern’ is the cycle itself which restarts itself.

The first cycle shows the transformation from 1900’s Drake Circus to mid 70’s Drake Circus shopping center. This shows two steps of decay, one accidental during the blitz and one to make way for the redevelopment.

The second cycle shows the transfromation from mid 70’s Drake Circus to the Drake Circus Shopping centre we have today. This cycle show two different types of decay where the structure was left for a period of time to naturally decay, unused. Then the second decay is due to the second redevelopment into the new Drake Circus.