what do the social experiments tell you? Can you give some examples?

Question: what do the social experiments tell you? Can you give some examples?
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Asked by 09stockwelll to Alessandro, Angela, Claudia, Marina, Phil on 19 Mar 2013.
- Claudia Krehl answered on 19 Mar 2013:
  
  Here int he UK you are expected to become 84 years old on average. But this varies from country to country depending on economic wealth, the health systems and our culture and politics.

Question: what do the social experiments tell you? Can you give some examples?