Surprisingly, the idea that experiencing pain reduces feelings of guilt has never been put to a proper scientific test.

令人惊讶的是，经历痛苦来减少负罪感这个想法从未被严谨的科学测试过。

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They worked with American scientists and engineers to develop and test new rockets for military and scientific use.

VOA: special.2009.06.10

This wasn't a scientific test, because everyone has different visual acuity and the differences we see are ultimately subjective.

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To even reasonably run a scientific test, the iPhone should have been sitting on a non-metallic pedestal inside an anechoic chamber.

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That evidence does not have to meet any kind of scientific test: pretty much any pattern of ink on paper will do the job.

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