Other points have been addressed amply, so I’ll just point out one major flaw, which is that not returning a plastic bag containing miscellaneous garbage and money that doesn’t even cover a decent meal in major cities doesn’t necessarily mean they are taking it in their possessions. In fact most people in China are careful of this kind of suspicious behavior as it might lead to trouble if it is some sort of scam. The “not my business” attitude is quite common, but dishonesty is not the correct word for it. The authors might have been raised in such humane and altruistic families as they did not know that there’s the word “indifference” in the English dictionary. So there you go researchers. You just learned a English word and a new concept that’s part of the general education, from me. You are welcome.