The tenth issue looks at toilet paper, the life of which is fundamentally short-lived. Even though its absence is a major cause of panic for toilet users, the toilet roll remains a lowly object, and occasionally even cause for embarrassment. Considering how excreting faeces is a daily affair for most, such sentiments towards a roll of tissue destined to keep one’s hygiene in order seems rather immature. ‘Science of the Secondary’ is a creative project by Singapore-based Alvin Ho and Clara Koh, who together go by HOKO. The series is a way for them to investigate the everyday and rediscover our curiosity about things and practices so familiar that we often overlook them.