If I were Marina, I'd want to find out how much skill and experience Denise Ross had before she was able to do what she did
I think you're suggesting that one would have to acquire all the skills and experience of another before one could repeat what another had done.
But ... That's clearly a fallacy. We don't have to do any such thing.
If I am shown how to make a nice fluffy moist omelette, i can repeat it almost immediately. I don't have to go through all the trial and error and sticky burnt messes that others have first.
150 years ago, Cantor developed set theory. It was the domain only of academics and few people understood it or indeed why it could be useful. And yet today a child can learn it.
/Dismounts hobbyhorse

