http://blogs.msdn.com/johngossman/archive/2008/10/16/expression-architecture.aspxI'm often asked about the Expression architecture, but have never found the time to really describe the whole thing. Now Paul Stovell has dug into how it works using Reflector and compares it to Composite WPF (Prism). Some of what he sees is a case ofen-USCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.msdn.com/johngossman/archive/2008/10/16/expression-architecture.aspx#9003347Fri, 17 Oct 2008 20:14:16 GMT91d46819-8472-40ad-a661-2c78acb4018c:9003347QuantumBitDesigns<p>I would also find a review of the Visual Programming Language of Microsoft Robotics Studio to be very interesting. Do you have any comments on the design and challenges faced with that project?</p>http://blogs.msdn.com/johngossman/archive/2008/10/16/expression-architecture.aspx#9007931Mon, 20 Oct 2008 21:35:16 GMT91d46819-8472-40ad-a661-2c78acb4018c:9007931John "Z-Bo" Zabroski<p>I wish I had Paul's free time...</p> <p>I'd add one cautionary note: Looking at how others do things is cool, but experimentation and prototyping is essential to good design decisions. &nbsp;E&amp;P has been way more useful than Prism guidelines.</p> <p>My biggest fear of guidelines is that they encourage &quot;meeting some specification&quot;. &nbsp;Goals-as-targets is a poor formula for quality. &nbsp;Who decides the goal? &nbsp;Somebody, arbitrarily.</p>