US linguists so tickled by Singapore's toilet etiquette posters, they wrote a paper on it

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"the choice of the comic genre as the medium of the message allows for a made-up world", helping to make taboo topics more relatable and memorable to the public.

the comics' "humour and visual-verbal interplay, simple narrative plot and exaggerated characters make it possible to remind, instruct and chide without sounding overbearing".

examining whether comics are more compelling than other campaign materials in persuading citizens towards action.

Qn: Can humour ever be serious? (Cam. 2012)