Both Uses

implicit
in
Half the Sky
(Edited)

The implicit social contract is that upper-class girls will keep their virtue, while young men will find satisfaction in the brothels.
Chpt 1

implicit = understood (without having been directly said)
Implicit in what we're saying about China is something that sounds shocking to many Americans: Sweatshops have given women a boost.
Chpt 12 *

Definitions:

(1) (implicit as in: not explicitly but implicitly)
not stated directly, but understood (or capable of being understood) from something else

Shared information is often divided into two categories: That which is said explicitly (directly in words that leave no room for confusion or doubt) and that which is said implicitly.
(2) (implicit as in: implicit problem with the design)
exists as an inseparable part or characteristic
(3) (implicit as in: I trust her implicitly.)
without question or doubt
(4) (meaning too rare to warrant focus)
Another sense of the form implicitly is "without doubt or reserve" as in, "I trust Sue implicitly".

It is a more strongly stated sense of the more general meanings; e.g., "Sue implies trustworthiness," or "trustworthiness is inherent in Sue."