If you’re lucky (and probably older), you learned these things in school ... (because bad grammar is painful to the discerning eye), and (there’s that Oxford comma) competent.

More than 95 per cent of teenagers at Portsmouth Grammar School secured a place at their dream university – with an impressive seven destined for either Oxford or Cambridge. Portsmouth area A ...

Ah, the Oxford comma. Journalists often fight over it, academics love it and a lot of people don't care about or even know what it is. But this singular bit of punctuation is actually super important.