Many science experiments are carefully thought out. Often, the procedures we follow have been thoroughly tested. We measure everything we can at every point that we can, so that we can determine if a procedure, like isolating DNA, is working properly and if the procedure doesn't work, we can determine what went wrong. When the procedure is done, we analyze our data to determine if our experiments really
gave us an answer. Then, we present our data to others, in venues like lab meetings and conferences, subjecting our work to review to the toughest critics we can find.
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