Domain Knowledge is very Important
A boy was telling the story to his IT friends and trying to explain him
Importance of domain knowledge....

One day my mother was out and my dad was in charge of me and my brother
who is four years older than I am. I was maybe 3 and half years old and
had just recovered from an accident in which my arm had been broken
among other injuries.

Someone had given me a little 'tea set' as a get-well gift and it was
one of my favorite toys. Daddy was in the living room engrossed in the
evening news and my brother was playing nearby in the living room when I
brought Daddy a little cup of 'tea', which was just water. After several
cups of tea and lots of praise for such yummy tea, my Mom came home.

My Dad made her wait in the living room to watch me bring him a cup of
tea, because it was 'just the cutest thing!!'

My Mom waited, and sure enough, here I come down the hall with a cup of
tea for Daddy and she watches him drink it up, then she says to him,
'Did it ever occur to you that the only place that baby can reach to get
water is the toilet??'

....Mothers know!!

MORAL OF THE STORY :
Domain knowledge is very important!!! Else your supplier will trick you......