No, it doesn’t nullify it, but it’s not exactly useful info? And your analogy is a good one. When you read many of these books the “lesson” is really obvious

No, it doesn’t nullify it, but it’s not exactly useful info? And your analogy is a good one. When you read many of these books the “lesson” is really obvious too - “listen to your customer” or “aggressively cut costs in your supply chain”. Those thinks are the basics of business. Everyone is trying to do those things.