It's difficult to differentiate the two in work environments because their net output is comparable; superficially, Fi-subtypes do tend to appear more on task. Ne-subtypes seem to take longer to decide or to act; even though they seem more aware, their rationale can be flawed due to lack of time spent on planning their actions. Fi-subtypes seem to be more detached and less informed on the subjects of their plans even though their rationale about what they actually do know is usually quite solid. Both tend to often doubt themselves or their direction although they may not let it show, and seem to be very aware of potential consequences especially upon themselves, which can often cause pregnant pauses or severe reservations - those sage looks that are typical of EII.

a.k.a. I/O