To measure social networks and peer effects, you need to collect and analyze data on the characteristics and behaviors of the potential adopters and their peers, as well as the attributes and performance of the technology. You can use different methods and tools, such as surveys, interviews, experiments, observations, network analysis, econometrics, or agent-based modeling. Metrics and indicators that can be used to measure these elements include network size, density, centrality, diversity, adoption rate, timing, sequence, threshold, critical mass, tipping point, heterogeneity, segmentation, diffusion curve, satisfaction, loyalty, and retention. These metrics allow you to assess the number of connections and interactions among potential adopters and their peers; the proportion of adopters who adopt the technology; the minimum level of adoption or peer influence required to trigger or sustain diffusion; the variation in adoption behavior or characteristics; and the degree of satisfaction with the technology.