At the same time, the features are not obviously habitable, and their capacity even to enable human survival appears to be distinctly limited. In these circumstances, and with features that fall close to the line in terms of their capacity to sustain human habitation, the Tribunal considers that the physical characteristics of the features do not definitively indicate the capacity of the features. Accordingly, the Tribunal is called upon to consider the historical evidence of human habitation and economic life on the Spratly Islands and the implications of such evidence for the natural capacity of the features.