content: Horses are naturally curious, but will chose flight in almost any fight-or-flight situation.  Stallions and mares in heat can be notable exclusions.  Basically, yes.  Looking at the horse negates the herd response to assess for danger in the direction you are looking.  Space gives them enough room to bolt if they feel threatened.  It allows them to "process" you in a somewhat comfortable setting.  It's the ideal.