Pictograms in the interface are not decoration. Their purpose is to convey information in limited space. (The information should be that could be conveyed this way.) Currently they are often used as decorations or these two uses are mixed up. This is a mistake.
(It is interesting and saddening to see how years of UI research just went down the drain after Apple "resurrection". In my impression Apple was the first that started to lose their carefully collected UI expertise and replace it something that was original for the time, but that was all. E.g. I remember the very first ads after Jobs' comeback. They still had the beige Macintoshes, but their ads changed. Instead of a typical computer ad that showed a computer with a turned on screen and some desktop picture Apple's ads pictured turned off computers photographed from unusual angles or in unusual positions, like keyboard standing on its side leaning on the box, mouse hanging on its wire and so on. It was different, indeed, it stood out. Thing is, to always strive for that is harmful. Especially for user interface, where the motto is: do not make it original, make it right.)
(It is interesting and saddening to see how years of UI research just went down the drain after Apple "resurrection". In my impression Apple was the first that started to lose their carefully collected UI expertise and replace it something that was original for the time, but that was all. E.g. I remember the very first ads after Jobs' comeback. They still had the beige Macintoshes, but their ads changed. Instead of a typical computer ad that showed a computer with a turned on screen and some desktop picture Apple's ads pictured turned off computers photographed from unusual angles or in unusual positions, like keyboard standing on its side leaning on the box, mouse hanging on its wire and so on. It was different, indeed, it stood out. Thing is, to always strive for that is harmful. Especially for user interface, where the motto is: do not make it original, make it right.)