The Butterfly Effect

I am very interested in what my children have read. In What Katy Did I've found an old and wise proverb: 

'For the want of a nail the shoe was lost,

For the want of a shoe the horse was lost,

For the want of a horse the rider was lost,

For the want of a the rider the battle was lost, 

For the want of the battle the kingdom was lost,

And all for the want of a horse-shoe nail.'

Never forget, the tiny movement of a butterfly's wings can start a series of events that may cause something as huge as a tornado. Before the next term begins, repair the drawer which doesn't close properly or fix the door which is sagging on the cabinet. Let's avoid accidents.