In 1944 a precursor to CIA created The Simple Sabotage Field Manual
It was designed to help spies bring down enemy organisations from inside
As @davetrott notes in his vg book Crossover Creativity these behaviours no longer need spies, they’re common professional practice
@londonteacher_ Early Harry Potter books had two covers: one for children, one for adults that didn’t want to be seen reading a children’s book. Both were tasteful illustrations
@rshotton@Willlloyd@TotalMediaUK This is concerning for children given exams are often in a different room from where they learn (classroom) or revise (at home).