secondary memory vs working memory

[Tiago Reis (T. R.)]

from what I understand working memory is correlated with fluid iq. when we don't include secondary memory though, it becomes uncorrelated.

this may imply that secondary memory is powered by working memory. Working memory is simply the gateway that keeps your mind's brightest ideas from coming out of your mouth.

lets be honest this is a little speculative but this also comes from a takeaway of https://www.jstor.org/stable/40064890 (What's so Special about Working Memory? An Examination of the Relationships among Working Memory, Secondary Memory, and Fluid Intelligence)