473
Study finds 268% higher failure rates for Agile software projects
(www.theregister.com)
This is a most excellent place for technology news and articles.
I don't think there is a way that always works.
It's not always possible to get a clear spec and do big design up front in R&D. The whole point can be to work out what can be done and how.
Correct! Hence why i said it all depends on the product, the team, the time, money, project, ...
Many factors that decide on how to tackle things and the problems :)