  Minimalist theories of complex systems are broadly of two kinds: mean-field
and axiomatic. So far all theories of properties absent from simple systems and
intrinsic to complex systems, such as IP and SER, are axiomatic. SER is the
prototypical complex temporal property of glasses, discovered by Kohlrausch 150
years ago, and now observed almost universally in microscopically homogeneous,
complex non-equilibrium materials (strong network and fragile molecular
glasses, polymers and copolymers, even electronic glasses). The Scher-Lax trap
model (1973) is paradigmatic for electronic SER; for molecular SER Phillips
(3RCS 1995) identified two "magic" shape fractions \beta = 3/5 and 3/7, as
confirmed by many later experiments here reviewed. In the dielectric SER
frequency domain involving ion conduction, there are also special beta values
for fused salts and glasses, slightly, but distinguishably, different because
of the presence of a forcing electric field.
