Experimental design: what is the question?
What question are the experimenters trying to answer?
Bodgett and Scarper are starting from a weak position because they don't
know what question they want to answer, or the question is invalid
We have already seen that the question ``is my system any good?'' is not
one that can be answered readily
Normally, the experimenters should start with an hypothesis (an assertion),
and ask the question ``is this assertion true?''. Naturally, the assertion
needs to have a definite truth or falsity
Ideally the hypothesis should be framed before doing any experiments
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