Nit: "poster child" for the effectiveness [etc], as in such a perfect example that you would put it on a poster to represent them. In looking this up to be sur

Nit: "poster child" for the effectiveness [etc], as in such a perfect example that you would put it on a poster to represent them. In looking this up to be sure of my comment, I learned that it originally comes from children on posters requesting support against a specific disease: https://www.britannica.com/dictionary/poster-child https://www.britannica.com/dictionary/poster-child https://en.wikipedia.org/wiki/Poster_child https://en.wikipedia.org/wiki/Poster_child