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If the experiment you need to prove a model is an experiment that occurs naturally without intervention, you can prove a model just with observation.
by webreac 10y ago
If the experiment you need to prove a model is an experiment that occurs naturally without intervention, you can prove a model just with observation.
- lngnmn 10y agoAn experiment must be carefully designed according to the working hypothesis and control. Natural phenomena is not a formal experiment.
- rahimnathwani 10y agoAre you saying that it's impossible to draw conclusions from natural experiments? The 'family size' example here is nice: https://en.m.wikipedia.org/wiki/Natural_experiment#Recent_examples https://en.m.wikipedia.org/wiki/Natural_experiment#Recent_ex... I don't see why you need to design a new experiment if data that satisfy your requirements already exist. For example, if I wanted to know whether people given the name 'george' are more or less likely than the population as a whole to have at least one child, must I recruit pregnant women, and assign half of them to name their child 'george' and allow the others to choose any name? Would it not be better to look at existing data to compare Georges and non-Georges, perhaps slicing by socioeconomic variables? The results would be instant (rather than requiring 65 years to gather) and the dataset larger.