I rather think the fact the the same symbol/string always denotes the same thing is especially helpful for cyclic structures. Anyway I think I misunderstood th

I rather think the fact the the same symbol/string always denotes the same thing is especially helpful for cyclic structures. Anyway I think I misunderstood the article, I thought they added things to a dictionary in the prolog repl, which would be impossible in haskell/ghci afaik.