The main challenge facing propensity theories is to say exactly what propensity "means", and to show that propensity thus defined has the required properties.
And then, of course, to show that propensity thus defined has the required properties. The main challenge facing propensity theories is to say exactly what propensity "means".
The main challenge facing propensity theories is to say exactly what propensity "means". And then, of course, to show that propensity thus defined has the required properties.
The main challenge facing propensity theories is to say exactly what propensity "means". And then, of course, to show that propensity thus defined has the required properties.