Will the son rise tomorrow? Can you prove it?
Nobody really can answer whether they know that for certain either. However, repeated observation indicates that it is probably the case the sun will rise tomorrow.
As it is likely the case, thanks to repeated observation that the size and frequency of progeny is affected by its chance of survival.
The Son rose about 2000 years ago, but He is coming back soon. I hope we're all prepared!
The repeated observation of a correlation does not prove a connection between the factors, and it does not prove that, if a connection exists, the connection is (for example) genetics rather than environment.
I have observed that the son rarely rises in the morning without the application of loud drumming in his room or ice water on his face. Is this unfortunate situation caused by genetics? If so, what specific gene or combination of genes? Is his specific genetic condition the result of mutation, or simple randomness? Is it a survival advantage or disadvantage?
Is the observed behavior caused by environmental factors, such as temperature, lighting, or diet? Or is it caused by conscious human choice? These are the sorts of questions that are raised, but not answered, by the observations made by the researchers in the article.