right back toet robert solow, why am i not surprised?, labor dynamics and the total factor productivity and the original work in 1957. everybody believes catherine mann, those models are dead because of this new technology overlay that we have. what is citigroup economics -- does citigroup economics do with the technology overlay across all of our lives today? catherine: the model is not wrong, but it has to be reassessed in the light of new data and the new way technology in iraq's with labor, capital, and innovation. we stay with the same framework, but put new information. is the new information you've gleaned that causes the primal scream of viewers and listeners that there is no wage growth. that is what i hear in all the mail. is technology my enemy? catherine: no. there are some firms embodying technology very effectively, the amazons and googles, but also the leading health care system, leading hotel groups and tourism groups and business groups. that is the top line. 95% of firms in each sector do not embody a lot of technology.