. Is realism the claim that reality probably exists, or definitely exists, however?
There are multiple versions of both realism and anti realism. You can even make them overlap.
In another sense, it’s a statement of correspondence. If our minds are inside the world, then the map-territory distinction is ontologically important (note that the mind-territory distinction is itself an anti-realist position, as it argues that there is no direct correspondence between the world and the contents of our mind). If the world is inside our mind, then the map-territory distinction is indistinguishable from any other state of confusion
But you seem to favour a rather specific alternative involving fractals and stuff. Why wouldn’t that be empty? Isn’t evidence for realism, evidence against anti realism, and vice versa?
If making predictions really is the only game in town, then your alternative physics needs to make predictions. Can it?
Well, if my crackpot physics is right, it actually kind of reduces the probability I’d assign to the world I inhabit being “real”. Seriously, the ideas aren’t complicated, somebody else really should have noticed them by now.
But sure it makes predictions. There should be a repulsive force which can be detected when the distance between two objects is somewhere between the radius of the solar system and the radius of the smallest dwarf galaxy. I’d guess somewhere in the vicinity of 10^12 meters.
Also electrical field polarity should invert somewhere between 1 and 10^8 meters. That is, if you have an electrical field, and you measure it to be positive or negative, if you move some distance away, it should invert to be negative or positive.
Are these predictions helpful? Dunno.
Either way, however, it doesn’t really say anything about whether the world is internal or external.
There are multiple versions of both realism and anti realism. You can even make them overlap.
Does any of that make an observable difference.
Not really, no. And that’s sort of the point; the claim that the world is external is basically an empty claim.
But you seem to favour a rather specific alternative involving fractals and stuff. Why wouldn’t that be empty? Isn’t evidence for realism, evidence against anti realism, and vice versa?
If making predictions really is the only game in town, then your alternative physics needs to make predictions. Can it?
Well, if my crackpot physics is right, it actually kind of reduces the probability I’d assign to the world I inhabit being “real”. Seriously, the ideas aren’t complicated, somebody else really should have noticed them by now.
But sure it makes predictions. There should be a repulsive force which can be detected when the distance between two objects is somewhere between the radius of the solar system and the radius of the smallest dwarf galaxy. I’d guess somewhere in the vicinity of 10^12 meters.
Also electrical field polarity should invert somewhere between 1 and 10^8 meters. That is, if you have an electrical field, and you measure it to be positive or negative, if you move some distance away, it should invert to be negative or positive.
Are these predictions helpful? Dunno.
Either way, however, it doesn’t really say anything about whether the world is internal or external.