The document summarizes key points from the first chapter of the book "Crossing the Chasm" about technology adoption lifecycles. It describes 5 groups in the technology adoption lifecycle: innovators, early adopters, early majority, late majority, and laggards. It notes that while companies often focus on moving from innovators to early adopters to early majority, there is actually a wide "chasm" between early adopters and early majority, as the basis for their purchases is different - early adopters want change agents while early majority want productivity improvements. Crossing this chasm from early adopters to early majority is the point of greatest risk for high-tech companies and their long-term marketing plans