Those are the conditions in which logical counterfactuals are most well-motivated. If there isn’t determinism or known source code then there isn’t an obvious reason to be considering impossible possible worlds.
Those are the conditions under which counterfactuals are flat out impossible. But we have plenty of motivation to consider hypotheticals ,and we don’t generally know how possible they are
Those are the conditions in which logical counterfactuals are most well-motivated. If there isn’t determinism or known source code then there isn’t an obvious reason to be considering impossible possible worlds.
Those are the conditions under which counterfactuals are flat out impossible. But we have plenty of motivation to consider hypotheticals ,and we don’t generally know how possible they are