There is a way a human's mind prioritizes information. Certain objects in life represent different things and trigger different emotions for people.
People are also sensitive to different types of emotional information. For example there might be something difficult to understand emotionally that someone understands unconsciously because it is important or more obvious to their unconscious mind.
What types of information are understood unconsciously vs. consciously then? Clearly there is going to be a difference - I can think of many examples off the top of my head. There are simple things in life people do like knowing their schedule for a day, that could be considered to be emotionally simple, and there are more complex ideas emotionally that people consider during a day like how to handle a debate or argument.
Is there a type of 'emotional speculation' where someone guesses what something might feel like? You could say that people do this all the time when they make any type of emotional assessment (for instance how cool or uncool something is, or if they like or dislike someone). What is emotional subtlety then? It is defined by levels of conscious and unconscious importance, and degree of difficulty in understanding and absorbing the information.