i'll start with dr. hurd. i'm pleased to see your research was funded by the national institute of ageing. you may be aware, maybe all of you, maybe you're not aware, that some of my colleagues in the house of representatives hold a different view of the role of nih in health economics research. the house draft of last year's appropriations bill, our counter part which they released but did not pass included language that would have precluded nih from supporting any health economics research such as what dr. hurd did. so dr. hurd as an economist researcher, how important is nih's support to your work? are there other federal grants you could have applied for to get this study off the ground? >> it's extremely important, i would say say all-important to my work. i'm the holder of several grants and a center grant. the importance of nih funding comes from its, i would say primarily from its long term reach and also from its multidisciplinary aspect. our study involved cognitive scientist, economists, gerontologis