> Think about it: the principle of science is mapping the empirical world with a logical one. A null result represents a failure to do this. Let's say you try

> Think about it: the principle of science is mapping the empirical world with a logical one. A null result represents a failure to do this. Let's say you try a particular educational intervention. it turns out that if has no effect on children's learning. This is really useful information, because it means that we now know that there is no point in schools trying it.