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by sparky_z
2979 days ago
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Prepare your two samples. Put them in identical containers. Attach sealed envelopes that record which one is which. Mix them up in such a way that you can't tell them apart anymore. Randomly mark one A and one B. Perform your experiment on A and B. Once you have the results, open the envelopes to find out which one was which. Seems pretty straightforward to me. |
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