"Generally, it's a lot easier to represent concrete nouns than abstract concepts, so "document" is easier to design than "undo." This is a problem I run into a

"Generally, it's a lot easier to represent concrete nouns than abstract concepts, so "document" is easier to design than "undo." This is a problem I run into all the time. I was only asking about it yesterday: https://news.ycombinator.com/item?id=12260700 https://news.ycombinator.com/item?id=12260700 We need a good standard for abstract concept icons