numberwang said:
It is certainly Granger-causal, the strongest from of causality that can be empirically tested, as the 'war on poverty' preceded the degeneration of society. There was a time when things were different.
Did the 'war on poverty' cause poverty? https://www.youtube.com/watch?v=L5TS8QUJWXo
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There exists a statistic which serves to measure the ability of a person to move out of their socio-economic class (intergenerational income elasticity/persistence/mobility.)
It's easy to verify that countries with very strong welfare program tend to perform very well by these measurements. So the statement that higher welfare spending has negative impact on the outlook of poorer populations is rather dubious.
https://wol.iza.org/uploads/articles/176/pdfs/intergenerational-income-persistence.pdf
http://www.treasury.govt.nz/publications/research-policy/wp/2010/10-06/twp10-06.pdf
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