.....If

If a barber makes a mistake ,It's a new style 

If a driver makes a mistake , It is an accident 

If a doctor makes a mistake, It is an operation 

If an engineer makes a mistake,It is a new venture 

If parents make a mistake ,It is a new generation 

If a politician makes a mistake ,It is a law  

If a scientist makes a mistake , It is a new invention 

If a tailor makes a mistake, It is a new fashion 

If a teacher makes a mistake ,It is a new theory 

    If a student makes a mistake , It is a mistake