It's amazing that they've had this information for nigh on 100 years and now it's coming to the fore. I wonder how much advances in computer software have had in identifying the possibilities of this different way of thinking about relativity and quantum mechanics?
I don't know that computers have had anything to do with this. From the article, I infer that it was deeper understanding of QM that allowed them to see the issue they described. We might have had relativity for some time, but QM is still progressing.
I have no idea Richard, but I'm thinking that improvements in computers and software may have enabled them to do mathematics which point at / prove /check things they couldn't before. That's what I was thinking...