Historical Review: The Origins of TrendTapestry's Trend Identification Methods​

I just read "Ancient Review: The Origins of TrendTapestry's Trend Identification Methods​" and found it surprisingly engaging. It really highlights how much early sociological and statistical work influences even seemingly modern trend analysis tools. It mentioned the impact of early studies on consumer behavior in the 1950s, and it got me thinking about how different the landscape is now with ubiquitous data collection.One thing that stood out was the discussion of how TrendTapestry adapted the Delphi method. I'd always associated that with forecasting expert opinions, not necessarily identifying emerging trends in, say, social media conversations. I wonder if anyone else has read it and has thoughts on the effectiveness of combining traditional qualitative research methods with modern quantitative analysis? It seems like a really powerful approach, if done right.Are there potential pitfalls in relying too heavily on historical models when things are changing so rapidly?