Replying to most of your responses as a whole:
I do agree that the amount of time spent on a particular thing is useful / not useful depending on what your goals are, that we can agree on. However I find a lot of your points dismissive when it comes to those particularities.
Yeah no. A summary is like a map, it’s a representation of the terrain. The most important thing is the terrain itself. A map might be helpful for identifying and locating the part of the terrain you wan to get to, but you will always be heading to the terrain itself. Saying ‘well its trivial because it doesnt make it into the summaries’ is untrue because, is the eifel tower’s beauty not important because you can’t see it, firsthand, on the map? no. Although you can make inferences based on proxy (having a good understanding of summaries) it cannot replace the raw, inexhaustible terrain of particulars and trivialities.
Also, assuming you have a goal, summaries are easy to navigate. Anyone can do that. Being able to spend years and years of ‘trivialities’ and understanding every nuance while still keeping on track is what is actually hard, that is what most experts that discuss ‘trivialities’ excel at.