  We conclude this section by acknowledging that much more could be said about the important role that trust plays in the context of SECs. But we have at least identified some of the reasons why trust is very important for SECs and also showed how those companies can qualify as “zones of diffuse default trust” (Walker). Although we have examined only one model of trust – Walker’s framework – in analyzing some of the many dimensions of trust affecting SECs, we have not argued that Walker’s is the only, or even the best, theory for understanding trust issues affecting SECs. Nor have we argued that Walker’s theory is without internal problems. Instead, we put aside those kinds of questions in favor of using a specific model to analyze trust-related questions affecting SECs in a systematic way.