All right, welcome back to Power Lunch. We're going to stick with the tech trade and bring in Ed Yardeni of Yardeni Research. Um Ed, we want to kind of take a look back at some of these historical tech valuations.Overall, >> there's been a case made by more than a handful of strategists and traders out there that when we talk about valuations in the current market that it is not fair to compare them to what we've seen historically over the past 20, 30, 40, 50 years because the entire paradigm has changed. i ...