Explain the following concept with suitable example : Cultural Lag

1. The material aspect of culture changes very fast. It is convenient to adapt to new fashion, eating habits, new technology. 

2. On the other hand, non-material culture which is abstract, is very difficult to change. Knowledge, ideas and beliefs are rooted in society for many decades and centuries. Change in these aspects is not readily accepted by society. 

3. Over a period of time there is a gap between material and non-material culture. This gap is known as cultural lag. 

Example : Medical technology has advanced at such a pace so as to put it in conflict with several moral and ethical beliefs.