Beautiful, charming simplicity. There’s a lot to be said for it. Some of the worlds greatest and most prolific inventions are also the most simple, like the spectacularly simple paperclip, coat hanger or hula hoop. Apple products are also noted for their simplicity of approach and elegance of operation, hence their incredible commercial success. But behind that simplicity is a lot of careful thought and work, as Albert Einstein said “Any fool can make something …