Ant colonies have between 15 and 20% of slackers, and nobody knows exactly why. Could be genetic defect or aging, or something else like chemicals/poisoning or those ants are "reserve workers". Some ants just spend their entire day not doing anything at all, just staying at the same spot and that's it, others seem to pretend to do something, carrying the same piece of leaf/food all day long... And it's like that in all ants colonies https://www.youtube.com/watch?v=w231-7-8BVk https://www.japantimes.co.jp/news/2003/11/16/national/20-of-worker-ants-idle-lazybones-study/ >>Hasegawa said they discovered that about 80 percent of the ants engage in some sort of work, such as cleaning the nest or gathering food, but that the rest are mostly idle. The situation remained the same when the researchers removed six busy ants from one colony; the busy ants that remained had to work even harder while the lazy ants continued to do little or no work. Scientists have suggested that some ants may avoid working due to old age or inherent laziness. Hasegawa said the idle ants could be contributing something to the colony that they have not yet determined. Here they found it's 40% https://www.sciencealert.com/many-worker-ants-are-actually-lazy-slackers-but-there-s-a-good-reason-for-that No I'm not saying chinese are bug people or ants, slackers are a thing that's all, even among ants