Let's look at innovation.
Innovation relates to bringing solutions effectively to the market, to customers, to people. Different from an invention that is more associated with the event and less with the impact;
According to Ulwick (p31), innovation brings solutions resolving customer's needs;
Thus, a relationship with customers;
Thus, a relationship with their needs;
"Ideas-first" - in general, this approach consists of coming up with product or service ideas, followed by testing in validating the ideas with customers against customer needs.
"Needs-first" - in this other approach, "companies first learn what the customer's needs are, then discover which needs are unmet, and then devises a solution that addresses those unmet needs. " (P.31)
The look from Ulwick, when doing this theory analysis, seems to look for performance aspects, for these popular approaches. He is particularly looking at how a process or method could improve the chances of a group being more rigorous in the science (or art?) Of bringing solutions to solve the market/consumer needs.
Assumption - Innovation success directly related to the number of ideas;
Assumption - Quantity of ideas, and quantity of bad ideas killed, in cheaper and faster approach directly impact success;
Assumption - fail-fast approach, referenced by Innovator's Guide to Growth, Harvard Business Press, 2008.
On customer development - Ulwick does not bring customer development, or other lean methods, in this section (p.35). However it seemed for me that Steve Blank's customer development advocates for a method that starts with an vision first, followed by the validation.
1 - on more ideas and not significant improvement - anyway the point from Ulwick seems to be that more ideas approach, disconnected from learning, would lead to insignificant improvement considering the probabilities of customer unmet needs arrangements.
2 - evaluation of filtering methods is flawed (p.37) - these current methods would even consider bad ideas to move up, and as well fail to see great ones. And this is due to not acknowledging customer unmet needs. The methods commonly used that Ulwick refers are: cojoint analysis, paired comparisons, forced-choice scaling techniques, surveys, and qualitative methods such as focus groups. He claim that the methods, supposed to improve learnings for best ideas, fail because these methods rely on customers to evaluate the ideas. One point of failure is that the set of ideas can be weak; an obvious point. Other is that Customers would not be able to connect technology with needs.
3 - customers cannot express the solutions they want - due to the fact that the customer is not generally an engineer or designer.
A consideration here to be brought to this discussion is the work from Eric von Hippel, user innovation and free innovation, specifically this last one, that elaborates on the producer-consumer dynamism.