rblatz is referring to a well known correlation: more nursery happen in summer. More ice cream gets sold in summer. Therefore, ice cream sales are correlated with murders.
This correlation is not random - it holds across geographic boundaries and time. But it is not causal - decreasing ice cream sales (By limiting supply, raising price, etc) will not reduce murders. Decreasing murders (By more police intervention, limiting arms sales) does not reDuce ice cream sales.
Similarly, vitamin D may be The ice cream analog. COVID 19 may be the murder analog, and if that’s true, we don’t yet know what summer’s analog here - could be obesity, or genetic factors, or something else. We don’t know.
This correlation is not random - it holds across geographic boundaries and time. But it is not causal - decreasing ice cream sales (By limiting supply, raising price, etc) will not reduce murders. Decreasing murders (By more police intervention, limiting arms sales) does not reDuce ice cream sales.
Similarly, vitamin D may be The ice cream analog. COVID 19 may be the murder analog, and if that’s true, we don’t yet know what summer’s analog here - could be obesity, or genetic factors, or something else. We don’t know.