That theories are valid only because they have yet to be disproven.
No, scientific theories are valid because they are overwhelmingly supported by evidence.
While it is true that they can be changed or replaced by evidence that dos not fit the theory, they are not just speculation waiting to be disproven. The ‘biggest weakness’ you are describing is a complete misunderstanding of science.
Your last sentence is correct, but also contradicts your first paragraph.
No, scientific theories are valid because they are overwhelmingly supported by evidence.
While it is true that they can be changed or replaced by evidence that dos not fit the theory, they are not just speculation waiting to be disproven. The ‘biggest weakness’ you are describing is a complete misunderstanding of science.
Your last sentence is correct, but also contradicts your first paragraph.
yes, when people colloquially say “theory” they usually mean “hypothesis”.