I would be extremely wary of making such cosmological, sweeping generalisations about anything. &quot;Realistic hope that the person will ever be non-harmful&quot; really depends on a gazillion other variables.<p>And why start with a semantically negative presumption, anyway? A world of difference in attitude can be reaped from daring to ask whether a person might harm again, rather than if they will &quot;ever be non-harmful&quot;.