I want to know the answer to the following question:
According to Popper, a theory is scientific only is it is susceptible to what?
All the background I'm provided with is that "This realisation had an important consequence when Popper later tackled the problem of demarcation in the philosophy of science, as it led him to posit that the strength of a scientific theory lies in its both being susceptible to falsification, and not actually being falsified by criticism made of it.". Is that enough to answer the question?
Answer: yes