Whether the light is old or not we can see it in real time and thus we can test the laws of gravity in our own time. Also, most of the testing of the theory of gravity and relativity has been done using what we see from our own solar system, so that statement is false to a great extent. Evolution claims it is totally untestable in the present - although it should be testable if it were true. We certainly should be seeing, at the minimum, species in different stages of developing greater complexity. We do not see even that.
Hogjowls. We cannot perform anything but ex post facto "tests" on the data, just as we can't perform anything but ex post facto tests on fossil data. We cannot generate "new" experiments in either case, we can only postdict the behavior of data we have not yet uncovered.
Also, most of the testing of the theory of gravity and relativity has been done using what we see from our own solar system, so that statement is false to a great extent.
How many times to I have to say this? My interlocutor was talking about the UNIVERSAL law of gravitation. To demonstrate the UNIVERSAL law of gravitation, you must look at least once, somewhere other than locally.
Evolution claims it is totally untestable in the present - although it should be testable if it were true. We certainly should be seeing, at the minimum, species in different stages of developing greater complexity. We do not see even that.
Of course we do. Horses and mules, teacup poodles and Mastiffs, North/Souch Herring Gulls, mushrooms, jellyfish, ants, termites, ocean snails. We isolate groups, we observe attenution in their successful crossbred progeny. We find numerous examples that have attenuated far enough that their crossbred offspring are viable, but not successful, such as mules, llama/camels and dog/cats.