I think that there is a wide spread in overall software development process that can lead to good product quality. Some teams will automate testing to a greater

I think that there is a wide spread in overall software development process that can lead to good product quality. Some teams will automate testing to a greater degree. Some rely on consistent manual testing. Others seem to hire and raise fastidious developers that produce fewer defects to begin with. Each strategy takes a while to build into the culture, and during that build-up seems to be a heavy cost. So I think that it’s hard to judge the benefits of test automation separately from the software development organization and its product.