Great observations! Unless we get out now and then culture shock is the side effect. In 1969 Vietnam I experienced three culture shocks for this Michigan USA boy that I will never forget. The first was when I saw a bus full of people pull over to side of the road in a rural area and many people got off, men and women, and relieved themselves in the field. The second was when I was security for a haul of refuse from our landing zone to a local dump or landfill. There were a couple ladies of the evening there and one of the grabbed me in the privates and asked "want buy fuck G.I?". The third was riding security again in a truck and there was an open mini-bus ahead of us while going down the road. We came up to a residential area and stopped at a stop sign pulling up close behind the bus. There were two young girls in the back waving at the driver of the truck and I so we waved back. They proceeded to pull up their blouses and flash us. The interesting thing was is that they were surrounded by men who never reacted. They were looking at newspapers or at the surrounding area saw what happened and never reacted in any way that I could see.