Open innovation at the HSG Library We want your opinion! 21 September 2015 This April a speaking wall was put up in our library to let the library users express their ideas. The feedback was versatile and valuable. That is why we would like to continue the speaking wall in a virtual space. Have you got any suggestions, comments, ideas or feedback for the HSG library? We are looking forward to your input and we will answer you directly concerning the possible implementation on the speaking wall.