Thinking about one generation delay in producing the next generation (in rabbits) lead Leonardo Pisano Bigollo
(also known as Leonardo Fibonacci} in 1202 to the sequence of Fibonacci numbers in his book Liber Abaci. Would a
delay of 2, 3 or more also lead to Fibonacci-like numbers? Well, have a
look at my calculations.
Arthur T. Winfree defined pseudowaves as oscillations that seem to travel through a medium, although there is no physical conduction or propagation. Their apparent velocity varies locally and could even surpass the velocity of light. See his book "The Geometry of Biological Time" 1980 Springer-Verlag.
Phenomena like wildly circulating and changing electrical fronts on the heart during ventricular fibrillation could well be considered as pseudowaves.
An example of pseudowaves will be found here.
Back in time?
Physicists have no problem in calculating backwards until the beginning of time; for biologists this seems impossible. See my ideas about the BigBang calculations.