No, when you have disposition a and do A it may be the case that you ought to have disposition b and do B, perhaps disposition a was formed by habit and disposition b would counter-factually have resulted if the disposition had formed on the basis of likely effects and your preferences. What is false is that you ought to have disposition a and do B.
What is false is that you ought to have disposition a and do B.
OK. So the argument is this one:
According to two-boxers, you ought to (i) have the disposition to one-box, and (ii) take two boxes.
It is impossible to do (i) and (ii).
Ought implies can.
So two-boxers are wrong.
But, on your use of “disposition”, two-boxers reject 1. They do not believe that you should have a FAWS-disposition to one-box, since having a FAWS-disposition to one-box just means “actually taking one box, where this is not a result of randomness”. Two-boxers think you should non-randomly choose to take two boxes.
ETA: Some two-boxers may hesitate to agree that you “ought to have a disposition to one-box”, even in the philosopher’s sense of “disposition”. This is because they might want “ought” to only apply to actions; such people would, at most, agree that you ought to make yourself a one-boxer.
Rachel does not envy Irene her choice at all. What she wishes is to have the one-boxer’s dispositions, so that the predictor puts a million in the first box, and then to confound all expectations by unpredictably choosing both boxes and reaping the most riches possible.
Richard is probably using disposition in a different sense (possibly the model someone has of someones disposition in my sense) but I believe Eliezer’s usage was closer to mine, and either way disposition in my sense is what she would need to actually get the million dollars.
No, when you have disposition a and do A it may be the case that you ought to have disposition b and do B, perhaps disposition a was formed by habit and disposition b would counter-factually have resulted if the disposition had formed on the basis of likely effects and your preferences. What is false is that you ought to have disposition a and do B.
OK. So the argument is this one:
According to two-boxers, you ought to (i) have the disposition to one-box, and (ii) take two boxes.
It is impossible to do (i) and (ii).
Ought implies can.
So two-boxers are wrong.
But, on your use of “disposition”, two-boxers reject 1. They do not believe that you should have a FAWS-disposition to one-box, since having a FAWS-disposition to one-box just means “actually taking one box, where this is not a result of randomness”. Two-boxers think you should non-randomly choose to take two boxes.
ETA: Some two-boxers may hesitate to agree that you “ought to have a disposition to one-box”, even in the philosopher’s sense of “disposition”. This is because they might want “ought” to only apply to actions; such people would, at most, agree that you ought to make yourself a one-boxer.
From the original post:
Richard is probably using disposition in a different sense (possibly the model someone has of someones disposition in my sense) but I believe Eliezer’s usage was closer to mine, and either way disposition in my sense is what she would need to actually get the million dollars.