Before revision:  However, the amount of the drop is also information-driven: it is proportional to the absolute difference between the relative entropy and its celebrated generalization -- the R\'enyi divergence 4 . Given the widespread use of the R\'enyi divergence in science and engineering, and because financial returns are much easier to imagine, we expect our intuition to be useful in a broad range of fields.
After revision:  However, the amount of disagreement between two probability distributions is quantified by highly abstract entropic measures such as the R\'enyi divergence 4 . Given the widespread use of the R\'enyi divergence in science and engineering, and because financial returns are much easier to imagine, we expect our intuition to be useful in a broad range of fields.