the observation of a pattern does not tell us how it
is used." There is also the issue of how complex a
probe should be allowed to be (Liu et al., 2019a). If
a more complex probe recovers more information,
to what extent are we still relying on the original
model?
Furthermore, different probing methods may
lead to complementary or even contradictory con-
clusions, which makes a single test (as in most stud-