Suppose you buy a piece of cake and forget to put it inside the refrigerator. The next day, you see ants eating it. Or let's say that you were on a picnic grilling barbecues and left them on the table. When you return after 30 minutes, you see flies gather on them. What would you tell your friends that the cake or barbecue is not fit for consumption anymore? I'm asking because if I were to literally translate our language to English, we would say something like this: a) I don't know if you can still eat this cake because ants are already gathering on it. b) Let's just throw these barbecues because flies have already swarmed them.