PowerPoint Presentation - IV. Cooperation & Competition


	TFT:
	B accidentally defects and so next time A defects: CD => DC
	Next time, A cooperates, but B responds with defection: DC => CD
	PAV:
	B accidentally defects and switches A from C to D: (C, C) => (D, C)
	A defects and switches B from C to D: (D, C) => (D, D)
	both defect and switches other from D to C: (D, D) => (C, C)
	With noise, PAV may eventually switch back and forth with ALL-C, but will do well in either case
	This is why R_ij(t) is a function of time