[chouchinhua]

I'd agree with this. Those who think at a high level of abstraction often come to conclusions that almost sound like cliche to those who are not: "what the users want", "think counterintuitively", "because smart people cluster," etc. The advices sound hollow, almost like a bad sales pitch. The weight comes from the one giving the advice. It may be an issue of writing technique, but not an issue of credibility.