Chumly wrote:agrote wrote:Why would you need empirical results to understand a theory?
Because if a theory is false, and yet as discussed you are not aware of this falseness, you tell me precisely what it would be that you would be understanding.
You would be understanding a concept, or a hypothesis.
Or perhaps you would be understanding something that is true: "If Theory X were true, then Y is what the world would be like." Such a proposition can be true even if theory X is false. Perhaps you're right, and one can only understand what is true*, but that still allows us to understand true propositions about what the world would be like if a (false) theory were true. And I think that basically amounts to understanding the theory itself.
*I don't think you are right, though. I don't see why one can only understand what is true - you haven't given a reason for this.
Quote:agrote wrote:I'm not presupposing what you quoted.
Yes you are because "if" can be equated with "presuppose".
Definitions applicable to this context:
presuppose - take for granted or as a given; suppose beforehand
if - on the condition that, a possibility, condition, or stipulation
Okay, I see what you're saying. But I see those as two slightly different meanings. I'm not asking you to take it for granted that you know what the world would be like if some false theory were true. I suppose the only thing I want you to take for granted is that this is possible... it is possible to know what the world would be like if a false theory were true.
So what I am presupposing is: "it is possible to know what the world would be like if a false theory were true". That is a possibility, though it might never be an actuality (and therefore I don't want to presuppose that it ever is). It's a possibility, and if it were the case(hypothetically speaking), by my definition you would
understand a false theory.
So it is possible to understand a false theory.