...technical brilliance is like going to bed with the most genetically perfect and beautiful female you've ever seen. But she just lays there. She doesn't move; she doesn't make a sound. She has no personality, makes no interesting conversation (no sexy talk). But she's great to look at and her physical dimensions are perfect. Despite her beauty, one night with her is about all it takes before the fascination begins to wane. Eventually, her perfect looks no longer motivate you. You might as well make love to an inflatable doll.
Immersion would go like this: she's very attractive but not "technically" perfect. But she's a hot tamale. Smiling, writhing, wrestling, talking a blue streak. Nails across your back. Ride 'em cowboy. She's exciting! You can't get enough. You come back over and over again. Her few physical flaws don't matter. In fact, a flaw or two gives her character. She's interesting. A keeper.