A variant has more than one characteristic. The characteristics of variants are invariants. The invariants of a variant cannot be found without comparing it to other variants.
In any experiment, a variant is varied. Then, the variant is compared to the variants it forms to find its characteristics. The variants formed from a variant differ with experiments (conditions). The different characteristics of a variant are found by different experiments. All the characteristics of a variant cannot be found by a single experiment.
2006-07-18
22:46:41
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