^^Personally, my experiences in school and college opened my eyes to the world. Growing up in North Philly, I felt my reality set a standard for the rest of the world. High school and college changed all that. And then I went to work for a firm that encouraged us to think out the box, challenge the status quo, and had great experiences with some very smart, experienced people. So personally, using Ne is facilitated by my Si having multiple experiences towards any one particular issue to draw from.
Nowadays, it's the larger, unchartered waters where I'm reluctant to use Ne. Si doesn't have anything to supply it, making me less comfortable working with it. In those situations I have to remind myself how Ne type approaches has worked for me in the past (actually using a Si approach), so I should be okay working with the possibilities it brings, even if I'm not familiar with them all.