In 2014, during the first Scottish independence referendum, 16-17 year olds were given the vote - and they largely chose to remain a part of the UK.
In 2016, when the UK voted in a referendum on its membership of the European Union, they weren't given the same privilege.
A Labour and SNP bid to permit 16-17 year olds a vote in the referendum was voted down in the House of Commons by Tory MPs last year, by 310 votes to 265.
So would they have changed the result?
It depends how 'Remain' the age group is - polling on the day showed 75 per cent of 18-24 year olds voted to Remain.
If you assume this percentage of Remain voters with the ONS mid-year population estimates for 2015 (15-16 year olds to account for the year's gap and without factoring in turnout) then the result is far, far closer.
However, some surveys suggest 16-17 year olds are more pro-Remain than 18-24 year olds. A recent survey by The Student Room put support at 82 per cent in that age group. While that wouldn't be enough to sway the vote, 93 per cent would have (with full turnout).
Taking 82 per cent with a national average of 72.2 per cent turnout, Remain is still 586,000 votes short.
What a time to have no say in a massive political decision that will affect you for a lifetime.
Oh, and now Scotland is threatening to leave the United Kingdom, again.Picture: Peter Macdiarmid/Getty Images
More from the Independent: EU referendum: UK result would have been Remain had votes been allowed at 16, survey finds