Here are some ideas about the kinds of shifts in perspective that Lenore might be referring to when she speaks of using the Secondary Function to support a dominant "agenda" vs. using the Secondary Function to genuinely broaden your perspective.
Ti: Spinning the truth vs. Seeing the whole truth
Fi: Pleasure-seeking vs. Seeing what is truly good
Si: Seeking facts to support a purpose vs. Allowing yourself to see whatever facts are there
Ni: Seeing through smoke and mirrors vs. Seeing the validity of other perspectives
Te: Judging vs. Navigating
Fe: Serving vs. Negotiating
Se: Idle amusement vs. Being present
Ne: Idle curiosity vs. Opportunism
Can you elaborate?