Young people have different opinions about many things, and they will change their minds. I do not think that we can judge whether to accord somebody the right to vote based on their propensity to change their mind. That would be a contradiction of democracy.
The hon. Member for Taunton Deane (Rebecca Pow) brings me to my next point. The younger someone is when they vote in the referendum, the longer they will have to live with the result. It seems to me iniquitous that we should not allow our younger citizens to participate in a decision over the future of their country, when they will have to put up with the consequences of that decision for the longest.