There was a similar article some time back about attempts to retrieve and study Rocketdyne F-1 engines from the first-stage of the Saturn V rockets from the Apo

There was a similar article some time back about attempts to retrieve and study Rocketdyne F-1 engines from the first-stage of the Saturn V rockets from the Apollo missions because understanding of their design was lost. I can't find the article, but someone did point out that in many ways the Space Shuttle's liquid-fueled engines were superior, albeit less powerful. It's just a fact that we haven't done anything quite like a manned moon mission in decades and a lot of that experience is unique, and is now "retired". I agree it's sad to see. I've been reading a few books on the computer systems from the program and it's fascinating - I recommend Digital Apollo if you're interested in what we still know about that aspect.