Picture book designed to teach children about consent has divided opinion

A picture book designed to teach children about consent has dived opinion. 'C is for Consent', by American author Eleanor Morrison, offers lessons on 'how to offer affection'. The book is designed for children aged 0+ and follows a character called Finn and ends with the lesson that he should ask for consent before holding his female friend's hand. Is it ever too early to learn about consent or is a book like this inappropriate? Stephen got the views of commentators Angela Epstein and Fionola Meredith.