[ChinoCoug]

"falsifiable" is a more appropriate word than "verifiable." Nothing is verifiable, per Heisenberg uncertainty principle.

This is how I see the hierarchy of hardness:

1. Sciences that can be lab-tested, hence variables isolated. You can predict with precision the outcome of an event.

2. Sciences that cannot be lab-tested, but variables can be isolated to some degree by examining data. No exact predictions, but you can predict that the outcome will fall within a certain range at a high probability.

3. Sciences that rely on comparisons of small numbers of observations or case studies. These researchers often commit egregious methodological errors.

4. Warm-fuzzy pseudo-science like literary criticism or historical criticism where researchers have nothing better to do than deconstruct and pretend they know things they can't really know.