If sensing represents practicality and a focus on the concrete (and not running into walls, like I occasionally do), then intuition is - well, something different than that.
Many ENFP's and ENTP's (and also INTP's and INFP's) that I've known have been seen by sensors as "out there" or "a little loopy" - eccentric daydreamers, if you will. We know that's not true (entirely), but that's how they see us because we are so much different than them.
I was thinking the other day about how - as much as I enjoy the theoretical and throwing around ideas and concepts - there is also something in me that says, "it doesn't mean anything unless it becomes tangible". I was thinking, "If you have great ideas, then you have to strive to at least turn one of them into some sort of reality - something that benefits someone or some thing in some real way." I don't want my tombstone to read, "He had a bunch of great ideas. What a fellow!"
Then I started wondering if ENTP's and ENFP's would be even "more theory, less tangible" than myself, being that their intuition is primary and their sensing is inferior. My intuition is only auxiliary and my sensing is tertiary. What I'm getting at is that sensing (concrete/practical) and intuition (ideas, concepts, theories) are "closer together" for me (2nd and 3rd functions) than they are for ENTP's and ENFP's (1st and 4th functions - big difference). In other words, if all other things are equal, perhaps I place more importance on the practical things of life than those types. I don't consider myself more practical or sensing than anyone (I'm very much an intuitive), but I wonder what ENTP's and ENFP's would say about this relation between sensing and intuition.
Then I realized that INTJ's and INFJ's also have intuition as their primary function (but it's Ni, not Ne) and sensing as their inferior. But, they seem fairly practical in comparison to myself - meaning that sensors don't see them as being as "loopy" or "out of touch" as they see the Ne types.
That's it. Would love to hear what people think.