Making mistakes

If a barber makes a mistake, it's a NEW STYLE
If a driver makes a mistake, it's a NEW PATH
If an engineer makes a mistake, it's a NEW VENTURE
If parents make a mistake, it's a NEW GENERATION
If a politician makes a mistake, it's a NEW LAW
If a scientist makes a mistake, it's a NEW INVENTION
If a tailor makes a mistake, it's a NEW FASHION
If a teacher makes a mistake, it's a NEW THEORY
If a boss makes a mistake, it's a NEW IDEA
If an employee makes a mistake, it's a ... MISTAKE