Great article from A List Apart about sketching as a problem-solving and idea generation tool.
There is no shortage of software or hardware tools for producing amazing work. It seems that whatever you can imagine, software and hardware can make it happen.
Adding sketching to the design process is a great way to amplify software and hardware tools. Sketching provides a unique space that can help you think differently, generate a variety of ideas quickly, explore alternatives with less risk, and encourage constructive discussions with colleagues and clients.