[This will be TL;DNR for anyone uninterested in QM. Don't feel bad about ignoring it.]
A bunch of things, some dating back several years, feel like they're converging for me, and converging onto the notion that it may be possible to use the study of physics - in particular Quantum Mechanics -- as a Vipassana practice (or at least as part of such). I know the mere mention of QM can ring alarm bells for many people who have seen that theoretical system abused by charlatans. All I can do on that front is hope you read a bit further and agree that I'm not in that particular game.
I'll base this on six stories/observations:
1: I found Eckhart Tolle's personal story of his own "epiphany" intriguing. The central point for him was the challenge presented to his mind of the phrase "I cannot live with myself". He spotted the duality there and, crash bang whallop, his life changed. He spent the next six months in non-psychotic bliss, and then mellowed back down into the fairly wide reaching phenomenon he is today. The part of this that I find significant is the nature of the thing that created his satori. It was an analytic effect, created by a statement. Koan-like perhaps. But he wasn't meditating in any meaningful way. Now this isn't physics obviously, but it is, as I say, analytic, and in that respect is similar.
2: Several years ago I had a mildly curious experience while driving my car. It was a beautiful clear day, with long visibility. For some time (maybe seconds) I found myself with a feeling that I was somehow "above" or "outside" the whole scene, looking in. Nothing in my *perception* had changed -- I was in no danger of crashing the car -- something else had. But significant in that is I was already well advanced in my study of physics and particularly the philosophical implications of QM. So I wasn't at all confused by the "above" experience. I knew exactly what was going on. I was beginning to see through the illusion of what we normally think of as "reality", and beginning to sense a hint of the underlying *actual* reality. Notice though -- what I'm describing was more than me understanding; I was experiencing.
3: A few years prior to that, also while driving the car, I had been listening to Brian Greene's "The Fabric of the Cosmos", and specifically to his description of Bell's Inequality. I already knew the theory, but something in Greene's narrative flipped a switch. The result was I laughed out loud, and felt what I can only describe as a rush of joy coming up from my stomach. I had seen something I hadn't seen before, despite already knowing the maths. As above, this was an *experience*, not just an understanding.
4: Fast forward to today, as I understand more and more about Buddhism and vipassana and enlightenment. I notice the distinction between samatha and vipassana. I notice that some forms of meditation lead only to concentration, while some may lead to insight. I notice that if one isn't alert, one may be tempted into being satisfied with the former at the expense of the latter. And I notice that a key part of the latter is often the subject of meditation and the intent of the meditator. For example, according to several teachers, if one wants to gain insight into reality, the subject of meditation must *be* reality (i.e. it cannot be a purely mental concept). And I find myself intrigued by that. What *is* insight meditation and why does it lead to insight? What *is* insight? And, crucially, what is it about reality that makes those things -- the nature of insight meditation, the nature of insight, and the connection between the two -- the way they are? In other words, an overarching, all consuming, grand unifying, "WTF?"
I'll do 5 and 6 at the end. In the meantime, pulling those together I'm beginning to suspect that not only is logical, skeptical, analysis not merely *not* a hinderance to insight practice, and not merely possibly an *aid* to insight practice, but such analysis may -- if done in the right way (very important: see below) -- actually *be* insight practice.
I'm beginning to wonder if I may have been inadvertently "practicing" for years, in the form of my pursuit of insight into reality via physics. I am absolutely not free of all suffering, and so if that is a marker of enlightenment, I'm not there yet. But that wouldn't be a surprise, because as I say it has been inadvertent. I'm stumbling over such things, and happening to notice some of the effects. Indeed, it's only now that I'm beginning to notice a pattern.
Now I said just above that it's important the analysis is done in the right way. That is absolutely crucial; I cannot emphasize that enough. It works like this. There are basically two different ways in which to "do" the analysis. One is to do what most people think of as physics. It's measuring speeds, and distances, and its fields, and particles and so on. That's no use for what I'm talking about. Instead, you have to look at what doing those things means; at what those concepts represent; at what physics actually *is*. It's quite possible to be a world class physicist and never do the latter. In a sense, "normal scientific inquiry" is a near enemy of what I'm talking about. This relates to point 4 above. "Normal physics" is like samatha. It's cool; its useful; and it can make you superb at doing certain things. But it won't lead to insight about reality. Why? Because normal physics doesn't study reality. It studies mental concepts. But if you understand that, and use that fact to then *actually* study reality -- i.e. the practice I'm talking about -- then why wouldn't insight follow?
OK, and here are the final two observations. They consist of noticing some similarities between the meditative paths to enlightenment, and this conjectured "analytic" path.
5. First, it is *very* hard to explain to those who aren't themselves doing it. Even here, on DhO, I've received several knee-jerk reactions against mentions of QM. That's understandable because of the nonsense that's often done in the name of QM. Nevertheless, what I'm talking about is deeply non-intuitive and it's possible it may only be properly understood by someone who is also "practicing" it. And that's not because QM is hard and you need some fairly heavy math to really get into it. (In fact you can do what I'm talking about without the maths -- although you do then need to rely on someone else to have interpreted it for you). It's because it breaks several pretty deeply held and usually unnoticed assumptions in the individual. And that is remarkably similar to Buddhism.
6. My experience of "doing" the analysis I mention just sounds very *very* similar to Daniel Ingram's and others descriptions of insight as it develops. It begins simply, observing relatively simple concepts. But it grows, and you start to notice a finer texture in the concepts. Then -- and this is a crucial stage -- you begin to notice the "holes" in the model of reality that lie where the concepts don't seem to reach. And it goes on and on from there. A good friend of mine is the only other person I know who has "made progress" like this, and I think it would be fair to say that if most people were to sit and listen to us, they wouldn't have the slightest clue what we meant. They couldn't have the slightest clue, because they just haven't covered enough ground, and haven't "seen" what we have seen. Again, very Buddhist; very DhO!

I find that last point 6 the most exciting because it's so relatively unexplored but it just feels ripe for mapping. And we're not starting from scratch. Several non-contemplative (at least, not as far as I know) thinkers, from Schopenhauer through Wittgenstein, seem to have played in this territory. They, all of them, were straining at the edges of discursive thought, but still it was taking them to what smells to me like honest to goodness insight. If we were to begin to piece together all that stumbling, and then progress more systematically from there, who knows what we might find. Nibbana perhaps.
Shrug. I'm not going to stop sitting meditation because of the above. But neither am I going to allow a dogmatic approach to sitting (e.g. "Stop Thinking So Much Robert; Just Sit") stop me from continuing to develop these ideas.
P.S. A quick Google
suggests I'm not remotely the first to consider this. (I have *not* read that fully yet, so I'm not endorsing it. For now, I merely point it out.)