Resonance is a diffuse form of attention, a sort of emotional-intuitive perception that can scan for multiple kinds of patterns at once:

what is surprising or counter-intuitive
what we know to be true, but we never quite thought of it that way
what aligns with and helps us interpret past experience
what is inspiring, moving, or meaningful
what helps us simplify and interpret other, more complex ideas
what tickles us in some inexplicable way, often becoming clear only much later
what speaks to our deepest goals, values, priorities, and questions
what breaks or challenges mental models, conscious or unconscious
what is rare and interesting, and could potentially be useful in the future