[Sorry my original posting here was a bit gruff. Let me rephrase it as follows:]
I’m happy to respond to questions that are raised in the comments on this blog provided they are pertinent to the thread in which they appear and provided I have the time. On the other hand, questions out of the blue with no relevance to a thread will be deleted. If you want to pose such questions, first be sure you’ve actually read some of my work (I’ve got a whole Q&A book titled The Design Revolution). If, after reading my stuff, you still don’t find the answer, email me (some of my email address(es) can be found at www.designinference.com). I receive lots of emails, so I can’t guarantee that I’ll get back to you, but I’ll do what I can.