Nothing, just words that don't have any predictive value or convey any understanding of the world.
Maybe an example would help clear things up. go into the lab with a 1 lb weight and a 2 lb weight and weigh them together.
Saying that the total weight could either equal 3 lb or any value other than 3 lb does not constitute a predictive theory for how the physics of summing Mass works.
It might be a theory that a scale display a value when I put things on top of it, but that is a different topic, and not what I'm testing.
This Theory doesn't tell me how the world works and if the expected value is 0 lb, 3 lb, or 1 million pounds.
I could go into the lab with no operating Theory or hypothesis on what the value of two masses should be when added together and collect data.
I can collect data with no expectation of correlation, and after measuring the combination of many weights, deduce that there is a relation between the combined weights and the total mass, and in fact it is a simple sum.
> Maybe an example would help clear things up. go into the lab with a 1 lb weight and a 2 lb weight and weigh them together.
> Saying that the total weight could either equal 3 lb or any value other than 3 lb does not constitute a predictive theory for how the physics of summing Mass works.
The relevant theoretical background here is hidden in the "weigh them together" step: that there is such a thing as weight, it's described by a single real number, you can measure it in such and such a way, and so on.
You don't notice these considerations when it comes to weight and speed and size because they're hardwired into our brains by evolution. We're not so lucky when it comes to, for instance, the quark mixing angles - we can't even conceive of them without a background theory, let alone start measuring them.
s1artibartfast|2 years ago
Maybe an example would help clear things up. go into the lab with a 1 lb weight and a 2 lb weight and weigh them together.
Saying that the total weight could either equal 3 lb or any value other than 3 lb does not constitute a predictive theory for how the physics of summing Mass works.
It might be a theory that a scale display a value when I put things on top of it, but that is a different topic, and not what I'm testing.
This Theory doesn't tell me how the world works and if the expected value is 0 lb, 3 lb, or 1 million pounds.
I could go into the lab with no operating Theory or hypothesis on what the value of two masses should be when added together and collect data.
I can collect data with no expectation of correlation, and after measuring the combination of many weights, deduce that there is a relation between the combined weights and the total mass, and in fact it is a simple sum.
consilient|2 years ago
> Saying that the total weight could either equal 3 lb or any value other than 3 lb does not constitute a predictive theory for how the physics of summing Mass works.
The relevant theoretical background here is hidden in the "weigh them together" step: that there is such a thing as weight, it's described by a single real number, you can measure it in such and such a way, and so on.
You don't notice these considerations when it comes to weight and speed and size because they're hardwired into our brains by evolution. We're not so lucky when it comes to, for instance, the quark mixing angles - we can't even conceive of them without a background theory, let alone start measuring them.