Miracles are currently unknowable
1. We cannot properly infer from the fact that, if event e were inconsistent with the physical laws understood by current science (henceforth C), then e will probably be inconsistent with the physical laws understood by any possible future state of science (henceforth F). [premise]
2. If we cannot properly infer F from C, then we cannot properly infer F (because there's no other basis from which F can be inferred). [premise]
3. If we cannot properly infer F, then we cannot justifiably claim that e, if C, is probably naturally impossible (henceforth N). [premise]
4. Therefore, if e occurs, and C, we cannot justifiably claim N.
Long (convoluted) version:
1. We cannot properly infer from the fact that, if event e were inconsistent with the physical laws understood by current science, then e will probably be inconsistent with the physical laws understood by any possible future state of science (e.g. science 800,000 + years from now). [premise]
2. If we cannot properly infer that event e will probably be inconsistent with the physical laws understood by any possible future state of science from the fact that e is inconsistent with the physical laws understood by current science, then we cannot properly infer that e will probably be inconsistent with the physical laws understood by any possible future state of science (because there's no other basis from which the claim can be inferred). [premise]
3. If we cannot properly infer that e will probably be inconsistent with the physical laws understood by any possible future state of science, then we cannot justifiably claim that e -- if it were inconsistent with the physical laws understood by current science -- is probably naturally impossible. [premise]
4. Therefore, if e occurs, and it is inconsistent with the physical laws understood by current science, we cannot justifiably claim that e is probably naturally impossible.