He may have experienced this. Everyone's experiences are not the same. Some people were there, but some people are not able to experience that life straight.
He may have been through this experience. Everyone's experience is different, some are not, some are bad, but some people can not take that experience into the helmet must have.
He may have been through this experience. The experience of everyone is different. Some more, some people have less, but some people can"t get that experience to use in life.