What- there is still no explicit knowledge about what kind of tools are designed for what kind of situation. For example, in WaveRiders case, we use SWOT to evaluate the marketing strategy. However, this approach is arguable. And in my opinion, SWOT may not be useful to evaluate a sing option of advertisement. Instead, SWOT could be more useful to understand company' overall position. In addition, there are many decision tools that serve nearly the same function and hence they are somehow overlap. It is important to select and identify one or two useful decision tool. But the question is how to do it. Why- this is the time issue. A small company like WaveRider does not have lots of time and financial resources for allowing them to use mutiplie decisions tools at the same time. Hence, getting the first decision tool right become crucial important. This is like the idea of DFSS. The difference is to get the decision tool right at the first time. How- evaluation and ask question are important. When team has finally decided to use that specific decision tool, ask questions before they start to implement it. Expert and experienced people can be useful to provide external opinions.