Let I = [0,1] and omega(0) be the first limit ordinal number. Assume that f
:I --> I is continuous, piece-wise monotone and the set of periods of f is
{2' : i is an element of {0} boolean OR N}. It is known that the order of (
I, f) is omega(0) or omega(0) + 1. It is shown that the order of the invers
e limit space (I, f) is omega(0) (resp. omega(0) + 1) if and only if f is n
ot (resp. is) chaotic in the sense of Li-Yorke.