Ever hear the phrase, 'Don't throw the baby out with the bath water'?
The essence of that phrase means to not throw out the good with the bad.
But how did that phrase start?
In the 1500's, a large metal tub was filled with water that had been drawn/carried and heated, then family bath time began.
Bath time started with the man of the house, then the sons and any other men in the household. Then the women and children got their turn in the bath water, and lastly the babies were bathed. Yes, all in the same water.
Because baths were only taken once a year, the water was so dirty by the time the babies were bathed, it would have been easy to lose someone in it.
Hence the phrase, or saying, 'Don't throw the baby out with the bath water'.