SLI is much more focused on fine details than SLE. But is that because Si and Se perceive details differently, or because SLI's Si is a Mental function and SLE's Si is a Vital function? I think the latter is accurate. It is not as if the Vital functions are inactive and detached from the Mental functions. Instead, they must complement each other. But I don't see how Socionics Se ("force") complements Socionics Si.
Socionics
Se: strength, power, will, effect, desires, tactics, appearance, weight, form, colour, beauty, territory, realization, to defend, to reach
Si: comfort, coziness, health, delight, quality, practice, state of health, harmony, “here and now”, aesthetics, convenience, pleasant, nuances