Thanks to quite a few of you who have reached out to me regarding my last post. Your comments not only continued my thinking about memorability and how it relates to my value framework, but also helped me realize how many of us are thinking through similar questions. I want to share how I’ve been thinking about these questions and ask about your philosophical processes – how have you arrived at the beliefs you hold today, and (more importantly) the questions you wonder about today?
For me, I suppose that each person lives according to some framework or value system (which may change), and within each framework each person has some goal or objective function. My goal is to optimize my self-chosen values; for others, the goal could be to discover some fundamental truth about the workings of the world or to serve as a mirror image of God. Throughout life, each person is trying to best achieve this goal.
I personally view achieving my goal as a reinforcement learning problem. I best achieve my goal by pursuing exploration (i.e. gathering information to figure out which activities would best achieve my goal) and exploitation (i.e. gathering immediate reward from activities that I already know achieve my goal pretty well, even if they’re not globally optimal). Although this tradeoff is an entire fascinating discussion in of itself, I am more interested in discussing exploration here because I feel that exploitation is something that is personally specific and straightforward (i.e. everyone knows of activities and experiences that accord with his or her own framework, and it’s pretty intuitive to figure out how to keep exploiting those activities) while exploration is a less straightforward pursuit filled with common challenges.
In exploration, I am Bayesian updating, i.e. I have some prior belief on which activities achieve my goal and update my belief with each new incoming piece of information or experience, hopefully honing in (accurately) on “best” activities as time goes on. Now each of my updates has two steps: 1) retrieving the new piece of information and experience, and 2) incorporating that into a new belief on best activities. To borrow words from Confucius, doing 1) and 2) is akin to “learning” and “thinking.” I first learn things: I observe how my friends’ reactions differ when I walk up to them smiling instead of frowning; I swim in a pool and capture sensory details from my environment; I go to topology lecture and finally have some (vague) understanding of manifolds; I notice that I feel less sad after my second house move than my first; etc. Then I think about these things, subconsciously or not; I somehow incorporate these learnings into my beliefs about which activities best achieve my goals of self-enriching and achieving.
It’s intuitive why and how I should do step one of learning. To again draw on machine learning analogy, the more data I have, the more informed I am to (generally) make better decisions and have a closer approximation of the optimum. If learning is good, how do I learn more? I try new things; I have different conversations everyday, explore different cuisines everytime I move to another city, go to college to expose myself to diverse people and pursuits, etc. Especially as babies, humans exhibit these learning tendencies by putting everything in our mouths or touching anything in sight; I think these learning inclinations are innate to all of us.
I also think we innately know why and how they should do step two of thinking. However, it’s much harder for me to articulate how I think in the same way that I just articulated how I learn. I could again offer the Bayesian analogy and say that when I think, I calculate the probability that what I just learned is actually true given my prior belief on optimal activities, and use that to update my beliefs (the improbability of each of my “learnings” correlates with how drastically I should shift my beliefs). But that calculation step is still a black box, both in actuality and in my attempt to explain it intuitively.
From personal experience, I’m going to offer intuition on how this black box works. In some ways, I think of the input-output process of this updating black box – which turns learning input into new belief output – as I would think about solving a math problem – which turns an input set of assumptions or conditions into an output set of answers or implications. More often than not, I start with techniques I already know that might help me get part of the way to the answer (e.g. draw the figure out on paper); then in the likely case that I still need to do more, I start experimenting with simple and intuitive or related approaches, often with many unfruitful trials, until finally I get that “aha” intuition, however fuzzy or hand-wavy it may be. Then I spend the rest of my effort trying to precisely explain that intuition and mold it exactly into an answer. In my mind, updating proceeds similarly. If I observe a learning input that is already very consistent with my prior beliefs, I can just leave my existing prior untouched (akin to using my existing “techniques”). If I see a novel learning input, subconsciously I try to connect it with previous related thought processes or learning experiences, with many of these attempted connections striking no personally resonant chord until I get some “aha” connection that for some reason “feels right” to me. Once I get that “aha”, I spend time consciously thinking or writing about this connection until I can articulate it precisely and make it consistent with the rest of my newly updated beliefs.
Concretely, I think that the “aha” intuitions happen mostly subconsciously and are brought out by events mostly beyond my control – during discussions with friends, a certain question or comment may spark revelation; a new pursuit like photography could help me notice something new and groundbreaking about the subject; or during free-writing I might let my consciousness stream and end up on a topic I never would’ve chosen to write about. Once I get these “ahas”, I try to talk through them with my friends or think and write about them explicitly in order to articulate them into my new belief set.
Some might then conclude that these “ahas,” not articulation ability, are the limiting factor to this updating because we can’t control them and therefore they must be some rare, magical occurrences. But “ahas” are only a limiting factor if few of them occur, and while we cannot directly control our “ahas,” we can affect the number of belief updates that we have to do by increasing the amount of learning we do, so that we update more frequently and more easily (with each new learning, we just have so many more things we can use to make those “aha” connections!).
This formulation of exploration has led me to balance my amount of learning (i.e. undergoing new experiences without necessarily thinking about how they help me achieve my values) with thinking (i.e. converting my learning into an updated set of beliefs and prediction machine). I used to think it incredibly important to think about things before learning or experimenting with them. After all, isn’t it much more efficient and powerful if I can predict something by thinking about it rather than having to actually conduct an experiment? It turns out that thinking, both in process and input, thrives on existing data (i.e. learning), and that thinking without learning can lead to fruitless mind-racking and “dangerously” wrong conclusions, to quote Confucius.
To accelerate my exploration process, I also ask myself how to increase “ahas.” We unintendedly do so in our daily (often bilateral) conversations and active pursuit of novelty (see post on memorability). But can we specifically design situations that would bring out lots of “ahas”? I think one way to do so is to have multilateral conversations through which we can broadcast and collect our learnings and beliefs in a many-to-many model rather than one-to-one discussions or self-contained thought processes. That many-to-many conversation is what I hope to spark with my thoughts and questions here on this blog. I encourage you to help initiate and participate in the discussion as well!