The big question I had after the Azerbaijan Grand Prix was: has Sebastian Vettel learned nothing from what happened in 2017?
Once again, entirely through his own mistake, he has lost the lead in the drivers' world championship.
During the four-lap sprint to the chequered flag in Baku, Vettel's main objective was to keep Lewis Hamilton behind him. Instead we saw him suffer a huge lock-up and go wide trying to take the lead from Valtteri Bottas.