> Greenfield projects are much more difficult as you have to synthesize this theory from whole cloth This is the reason why Domain knowledge (or access to a Do

> Greenfield projects are much more difficult as you have to synthesize this theory from whole cloth This is the reason why Domain knowledge (or access to a Domain expert) is so very important for Programmers. Without that knowledge you cannot build a "theory" and then map it to a "solution domain model".