Having moved from physics to biology, I am amazed with the difference in what the consensus of 'significant' is. Some of the difference is due to necessity, but not all.
When some people find that their model doesn't quite fit, they make a more accurate model. Others make a less specific model. It's the difference between model parametrization and model selection.
So when we get a dubious result, we can either say "no result" or "possible result". The choice tends to depend on how the finding affects future research. Biology is more exploratory than confirmatory, so they go that way.
