Hello, Well it's obvious that Nome of them can predict why babies cry and it comes out of experience bit it is easily made out by the old one's in the house as they are experienced in these. Some babies they keep on crying if they are not feeling uncomfortable with the environment, when they are hungry, and when they are hungry,when the diapers are not cleaned on time after developing rashes, stomach ache when you try to feed a new food and that is not tolerable by the intestines of baby but usual in this kind of conditions baby stomach will be bloated and she will be passing gas and she will be having severe pain, breathlessness, blocked nose. Usually these are the reasons for baby crying and need to be anticipated according to the situation. Thank you