During early childhood, children enter the second stage of cognitive development that piaget called the stage.

Pre-operational stage - During this stage (toddler to 7  years ) , children can process symbolic information.  They understand the meanings of symbols, for example, seeing the car keys in Mom's hand means it is time to go out.Their memory and imagination  also develops. In fact, they are, at this stage, equipped to take on role play games and make-believe.They understand the difference between past, present and future and have a more mature language and vocabulary.

new ideas form the base for the growth of the people.each time they try to develop, they may discover a new form or abilities of themselves this makes the people satisfied in living their life in a happy way.this makes sense that new ideas of people cn change their live.the ideas, if bring their best, they will be changing their present state.