Hi, I am new to Haskell, currently I am doing .Net development on windows platform. I began to know about Haskell for the reason when I knew some C# lambda features come from functional language. I am interested in Haskell from the very beginning when I saw it. For I am really a very beginner, I get some basic questions: 1. Can you have some very general information to explain why use Haskell or functional language. 2. Is it a right choice of Haskell if I want to develop some geology software which mainly doing some huge numerical computation which takes long long time? 3. How about user interface, is Haskell capable to build application with complex user interface? or should I just use Haskell to build the core engine and user other language to build the user interface? 4. Is Haskell cross-platform? I mean if the Haskell source code is "code once and build everywhere?" 5. Are there any successful applications built with Haskell? they can give me a direct scene of what Haskell can do. I appreciated any of your information or comments. -- Sincerely, Liu Shuping Ocean University of China Email: lsp.lhh@gmail.com