We are human,thus we lie

I just finished reading a psychology-related book last week.Well,it's about time for me to comment some of the points stated in the book which is quite related to biology.

I found out this point interesting - we will forget some depressing memory due to natural selection,cause this will help us live better and thus leave more offspring.This remind me a news I read two weeks ago.A counselor said that victim of rape will forget the incident happen on them,but like what the counselor said they just forget.So,when something which can bring back the memory occur,they will realize everything.When I related both of it,yes the point does make sense.If we forget that horrible memory,we do survive better.Another example which is quite connected is that almost of us have forgotten our infancy memory.This remind me what the elderly said,infant can see "dirty thing".If this is true,than the point is again make sense.

Another point stated in the book is so true,but maybe will lead to some misunderstanding and arise of lame excuse.Lie is neither good nor bad,it's just something we need in order to survive.Yes,there is uncountable lie in the nature.Some animals need to lie in order to evade their predator,some need to lie to get foods,some need to lie to complete their life cycle.Therefore,in simple and accurate way,lie is needed to survive.

Well,I guess the rest of the points stated in the book are inclined theory which is too bored to be understood.So,hope you can "digest" these.