@tomr,
tomr wrote:
Where is your pattern for the view you hold that you have realisable alternatives. This can never be tested even in principle for the same reasons.
I think you may be asking for evidence that a person could have done (but did not do) otherwise than he did. The evidence is nothing special. It is common ordinary, inductive evidence. Something we use all the time without thinking about it. For example: This morning I did not take my usual mile walk one I customarily take every day (if the weather is clement enough). Well, today it rained heavily, so I forewent my walk. I did not take it. Could I have taken the walk if I had chosen to ignore the weather? Of course I could have. Why couldn't I have? I was just as capable of taking the walk this morning as I was yesterday morning, and the morning before. The burden of proof would heavily fall on anyone (like you?) who claimed that I couldn't have taken my mile walk. If you claimed that I could not have taken my mile walk I would ask you to support your claim in view of the fact that nothing (as far as I know) had changed today which would prevent me from taking my walk. And, if in response to my challenge to tell me what evidence you had that I could not have taken that walk, you were to give as evidence only that I did not take the walk, I would accuse you (correctly) of simply begging the question, that is, of assuming what is to be proved. It is not a reason to think that I could not have done what I did not do that I didn't do it. That is simply circular reasoning. What you would have to do is to cite something that has changed from when I took my mile walk the day before yesterday, and something (let me emphasize) that is
relevant I mean that, for example, to say "Well when you last took your walk it was Tuesday, and today is Thursday" might well be true, but would not be relevant since you have no good reason to believe that that mere fact that today is Thursday and not Tuesday is relevant.