Earlier quoted context omitted.
Let's say I can't fully disclose the details because it is an area I am actively working on, but I had an algorithmical problem that was already solved in an ancient paper, but after a few hours of research I could find no open implementation of it anywhere. I thus spent quite some time re-implementing this algorithm from scratch, but it kept failing in quite a few edge cases that should have been covered by the orig…
clearly NOT novel as you so clearly explained, "an algorithmical problem that was already solved in an ancient paper"
But this is not the majority of what software developers are doing and working on today. Most have a set of features or goals to implement using code satisfying certain constraints, which is what current reasoning AI models seem to be able to do very well. Of course, this test was not rigorous in any meaningful way, but it really changed my mind on the pace of this technology.