You sure about that? Think about it for two seconds. Then eight seconds. Then two seconds. Then eight seconds. Then two seconds. Then eight seconds. Then two seconds. Then eight seconds.
Could they not just have the user blink it furiously for a few seconds ? Or long press after on ?
A small kid may reset your light bulb every day.
I'm not sure about the age, probably 3 years old is the optimal age, so they can understand switches an still not be bored to case havoc with them.