Well... if we're talking about Gould's "punctuated equilibrium" in evolution then we're dealing with fossilized bones which cannot tell us much about developments in, for example, internal organs.
So fossilized bones might appear more-or-less the same over some period of time, while internal organs adjusted to a new condition.
Kuhn's more general ideas could suffer the same way: yes, on the surface it could appear a certain scientific idea was unchanged over a long period, but more careful study reveals much agitation "under the radar":
Kuhn:
Toumlin:
>
How about a such as that isnt untestable speculation?
Quick question: how does Toulmins assertion differ from Kuhns modify paradigm under the Anomaly step?