The Pessimist's and Optimist's Views of Adult Neurogenesis

I'm not willing to spend $31.50 to find out what these scientists have to say., I wonder if one of my German readers could get the complete article if their government sponsored the research.
http://www.sciencedirect.com/science/article/pii/S0092867411006532

The reports by Bonaguidi et al. (in this issue of Cell) and Encinas et al. (in Cell Stem Cell) come to differing conclusions about whether and how the proliferation of radial glia-like stem cells of the adult hippocampus impacts their long-term potential for neurogenesis