FOR some teachers in Scotland, especially those who had previously been shielding, each new day in December working in a school must have felt like another whirr of the revolver’s chamber in a sick game of Russian roulette, with their own Government loading the gun and placing it in their hands. The announcement on Saturday that, despite a new aggressive strain of Covid-19 now seeding in Scotland, schools will be fully open this week and again from January will have widened that perception to the rest of their colleagues. But the truth is that the evidence of a disturbing lack of soundness to the Scottish Government’s decisions on safety in schools had become increasingly clear even before Saturday.