An exhibition with an argumentative structure

Have a look to the website of the Science Museum London to see an exhibit structured in a very argumentative fashion: http://www.sciencemuseum.org.uk/antenna/futurefoods/

• clearly stated issues
• standpoints and arguments nicely presented
• "join the debate", an effort to make the visitor enter the debate

Well, maybe it is not perfect; but it was a nice surprise to me to see how much an institutional setting such as a museum can not only "spread knowledge" but also promote an argumentative attitude.