a region of defended space surrounding someone. Trends of personal-space utilization might differ across species and across human societies. Personal space varies from other kinds of defended space by being an encompassing bubble which progresses with the person. It might have been utilized by multiple different species during evolutionary history to safeguard the single living being against intraspecies violence and risks to personal autonomy. Since human utilization of it varies across societies, at least a portion of it have to symbolize an acquired behavior.