Author Archives: Atrytone

Emergence and Fibonacci Numbers

There are some rather murky philosophical questions around the concept of emergence. Emergent phenomena seem to be, in some way, “more than” the sum of their parts. I think perhaps a better way to approach the concept is by pointing out that emergent phenomena are those that are more easily understood from a holistic point of view than a reductionist one. The most straightforward example I know of is the concept of temperature. Temperature reduces to the average kinetic energy of all the tiny atoms and molecules in a physical system. But we never actually use the concept of temperature in this way. Instead, we measure temperature directly via its effects on volume and pressure, and we think of it as a property of the system as a whole.

Now consider the following Fibonacci identity:

This pattern emerges from simple combinations of Fibonacci numbers. The underlying properties of the Fibonacci numbers that lead to this pattern have nothing to do with squares (see the video I did with Gavin Ford on this identity). However, the pattern is there and it can be grasped at this higher level. It can be treated as an abstract tool without referring back to the simple combinations that constitute a rigorous proof of the identity.

Perhaps much of mathematics is the same. Rules for various derivatives can be proved by examining the underlying details of slopes of tangent lines and limits. But the rules themselves can be understood and applied without any mention of limits. We could say that the derivative rules are emergent from the interaction of more fundamental concepts in calculus.

Is this kind of mathematical emergence the same as emergence in complex systems?

Constants Unite Us

Many things in this world are a matter of perspective. Often, those things can stimulate conflict and polarization. But constants are the same, no matter who we are or how we look at the world.

There are a slew of scientific constants. The ideal gas constant (R), the gravitational constant (G), and of course the speed of light (c), to name a few. And while these constants are the same for everyone, they sometimes appear different because empirical units like length and time are measured differently in different places. We could not broadcast 3.0×10^8m/s into outer space and hope that it could be understood by an alien being on a distant planet.

But we could broadcast τ (tau), the ratio of a circle’s circumference to it’s radius.  No matter where you are in the universe or what kind of measurement system you’re using, you will come up with 6.283185… for τ.

File:Circle radians tau error.png
Image by Galhalee is licensed under CC BY-SA 4.0

Okay, okay, there is some translation necessary. If you’re an alien you’re probably not going to have ten fingers, so you probably are using binary (τ = 110.01001…) or base twelve (τ = 6.339416…) or something (and yes, I did geek out and calculate those by hand). Anyway, my point is that τ is the same ratio however you look at it. There are some truths we all have in common no matter how big our differences seem sometimes. Happy tau day everyone!

(If you still think that π is the proper circle constant, check out tauday.com or Vi Hart’s lovely video on the topic)

Fraction Discovery for First Graders

First graders are a goldmine of discovery and excitement. Here’s a lesson idea that will turn fraction time into an epic adventure. Tap into your first graders’ capacity for wonder and innate knack for unlocking underlying patterns.

The idea

Do you know what you get if you compute 3/33? Try it on a calculator! How about 5/55? Hmmm, wow! Did you feel that spark of wonder? You might already know that these are both equal to 1/11 and that’s why they both produce the super cool repeating decimal result. But your first grader (or young math learner in that ball park) doesn’t know the punch line! It’s a mystery, and mysteries are the lifeblood of mathematical curiosity. This activity lets learners play with a few mysteries of division and fractions and encourages them to notice fascinating patterns.

Materials

Each learner or group of learners will need:

  • Calculator
  • 3 circles, one with 0.0909090909… filled in
  • Mystery fraction cards

Plan

Set the scene by passing out calculators and encouraging learners to play around for a few minutes. As I pass out the calculators I might say things like, “Does anyone like making long numbers on calculators?” “Oh, that’s a cool number! How did you make that one?” “Can you make a big number without pressing a lot of buttons?” Kids love calculators so you shouldn’t have too much trouble getting them to play around with them!

Grab everyone’s attention and let learners share with the group some of their favorite things they found while playing. Then ask, “Did anyone try 9 divided by 99?”. Write it on the board (as a fraction and with the divided by sign to show the equivalence) and give the learners a chance to spontaneously try it out. Notice and reflect the excitement at the super cool repeating decimal! “Wow! How neat is that?!”

Curiosity and playfulness are both in place – time for some structure! Pass out the circles and fraction cards, as shown in the image. Every group of learners should have all the fractions I suggested. The hope is that learners will relish the chance to try out these division problems on their calculators and sort them into the circles.

If they notice patterns, give praise and ask follow up questions. Most importantly, don’t forget to have fun. We are doing math, after all!

If you try this lesson please let me know how it went! Also, if you create some print-outs for this activity, please share them with the community and let me know!

Do most first graders hate math?

I have a new student, let’s call him Sam. He is in first grade, he loves snakes and stories, but according to him, he doesn’t like numbers or challenges. He likes patterns a little bit. Sam doesn’t like it when his mom makes him do subtraction problems assigned by his teacher.

On our first lesson we read the first chapter of the book The Number Devil. It tells a story about a boy in whose dreams the number devil gives him a magical tour of number theory. We paused in our reading often for him to pull out his calculator and follow along with what the boy in the story was doing on his calculator. This frequently turned into Sam playfully experimenting with various operations on the calculator and discovering new patterns. In the beginning of our second lesson, my he asked eagerly, “But do you remember the Number Devil??” as if worried that I might forget about reading the second chapter.

Long story short, Sam clearly loves math. He is delighted by patterns, by making discoveries about numbers, and by big ideas like infinity and dividing by zero. Yet, a bit of first-grade level arithmetic in school had him convinced of the opposite. And that’s only in first grade. What would we expect to happen by middle school? By high school?

It is common knowledge that most people emerge from public school with a distaste for math. But what is less commonly recognized is that most first graders start out with the capacity to love math. All we have to do is allow them to play with it and encourage them to be imaginative about it. In fact, I think all we really have to do is refrain from forcing them to do repetitive and tedious arithmetic!

Finding the Fun in Math at Home

Last week I was honored to do a guest blog post for the krazydad.com puzzle site! Thank you, Jim, for the invitation.

I wanted to cross-post it here, so here’s the first bit, and a link if you’d like to read more:

In the midst of a global crisis, I’ve been noticing some silver linings and surprising upsides.  This is not to downplay the seriousness of it all or dismiss any of the real loss and suffering in our world, but I feel it is important to take hold of the good things that can be found amidst all the uncertainty and struggle. 

Being stuck at home can be seen as a chance to spend more time with family.  Being unable to do some kinds of work can free up time for projects that otherwise get neglected.  And a break from math class can be an opportunity to play with math together.

I know, I know. The words “play” and “math” in the same sentence?  Hear me out.  In my world of teaching math to homeschoolers I find that the more playful I can make math, the better.  So today I want to share with you a couple ways I’ve been playing with math with my students this week. (read more)

Summer habit reflection

This summer I started four new habits. I started them a week apart because I was feeling too impatient to spread them out more. I knew it would be better to start them at least a month apart but I couldn’t bear to wait on any of them. Like Alice, I give myself very good advice.

First there was the habit of working on my side-hustle. This is not actually habit material. The tasks are too diverse. There are potential habits within the project that I could establish – posting on social media daily, for example – but “working on my side hustle every day” is too broad. Instead, what I need is weekly planning time where I plan out how to include tasks from my side-hustle into my week.

Habit number two was writing daily. I happen to be practicing that habit right now. This habit is starting to be more regular but has not gotten to the point of a daily habit.

Reading interesting non-fiction daily, however, was the easiest of the bunch to get started. This was something I was just waiting for an excuse to get used to. Deciding I was going to make a habit of it felt like getting permission from myself to spend time on it. It feels great that reading is now so easy and so much more common in my daily life.

Lastly, I wanted to get into the habit of cleaning a little extra daily, beyond what I was already consistently cleaning. I’ve realized now only part of this goal is really suited for a habit. Extra cleaning involves what I think of as “conquering new areas” of the apartment and “maintaining the conquered areas”. The maintaining part is much more suited to being habitual – there’s not a lot of planning or decision making involved and most of the component micro tasks are the same from day to day. The conquering new areas, as well as somewhat infrequent tasks like cleaning the bathroom or vacuuming, are more suited to being planned tasks. Due to my attempt to lump all the “extra cleaning” into a single habit, I haven’t managed to establish this regular cleaning habit yet – but I did learn from my first attempt!

So, my summer self successfully gave my present self two habit gifts: reading nonfiction and writing. The two that weren’t successful both taught me why they weren’t ideal habits as I originally conceived of them. Learning, learning!

Pre-habit formation

I’ve been building a lot of new habits this summer. Writing, working on the Pixidoku Kickstarter, reading non-fiction, and house-cleaning. But I also started getting in the habit of not playing addictive video games before noon. I’ve noticed that my morning hours are my most motivated, productive and creative hours (and I believe this is backed up by the neuroscience) and so I wanted to reserve these hours for tasks that require high cognitive function. It’s been very successful and it’s given me a new model for how to set myself up for success in forming new habits.

Often, an obstacle to forming a new habit is that there is an existing habit that gets in the way. Before I start building my actual new habit I can first get out of the old habit. I think doing a different enjoyable but non-addictive activity every day during that time slot would be a good start. One candidate for that type of task is a task I’m already habituated to. For me, I’ve been practicing Norwegian on most days for the last few years so it is easy and fun for me at this point. If I want to form a new habit at a certain time I can start doing my Norwegian at that time first. This will prepare me to transition to the new habit.

How do you form new habits? What are the biggest challenges and strategies you’ve tried for overcoming them?

Steel Men and Smart Houses

After reading my last post, a friend of mine linked this excellent video, by Alex J. O’Connor.  He makes a good argument and I want to see if I can steel-man it.

He says that when you assign a particular source to objective morality you open yourself up to an infinite string of “why” questions.  If you say the source of objective morality is God, one can ask why God’s word is objectively moral.  Any answer you give invites the question of why *that* thing is good or objectively moral.  At some point you have to prop up the whole chain with an assumption, which you pick based on a subjective judgement.

If you say the source of objective morality is an understanding of suffering and wellbeing, then one can ask why we ought to maximize wellbeing and minimize suffering.

Did I capture his main argument?

Here’s what I want to ask Alex after hearing his argument: Do you think any claims in science or philosophy can be said to be objectively true? If so, what happens when you apply the same skeptical analysis to those claims as you apply here to claims of objective morality?

In related musings:

I once saw a Disney Channel movie called “Smart House”.  A family moves into a new house equipped with an AI that can manipulate different parts of the house to fix meals, clean, and change the furniture and decor.  The house quickly gathers data on the new inhabitants and learns their preferences.  The young girl wakes up in the morning to be presented with a folded outfit.  “Calculations show that this is precisely the outfit you would have selected yourself,” the house tells her.

What if the house had instead selected a different outfit saying, “Although this is not the outfit you would have selected, calculations show that this outfit will produce better outcomes throughout your day in terms of social interactions, physical comfort, self-image and state of mind.”  Why is the house recommending an outfit that will improve the girl’s day on those metrics rather than others?  Doesn’t that make the house’s recommendation intimately based on subjective values?  But the house is programmed to serve the inhabitants according to their own standards.  Perhaps the house picked those metrics because the girl herself values those outcomes.  Perhaps the house knows what the girl should wear better than she does.  The house has access to more data and more processing power, and so has better knowledge of which outfits will lead to which outcomes.  Furthermore, perhaps the house has more knowledge about the girl’s relevant values than the girl does herself.  And, if you grant that much, didn’t the house acquire that knowledge in just as objective a fashion as the knowledge about the specific outcomes?

Rosetta stone of conscious experience

(This is a continuation of my thoughts from my introductory post about this topic)

This morning I was returning to the question of whether suffering can be empirically determined.  It seems to me that if the only assumption needed to get value science off the ground is a definition for “suffering” and “wellbeing”, then that doesn’t amount to inserting values into the equation.  But we have to be able to determine empirically which conscious states are favorable and unfavorable.

I’m not sure if we can make the leap from understanding brain states to evaluating conscious states.  With humans, we can ask them which mental states they experience as positive.  But could we bridge that gap regarding, say, an alien species whose communication was completely unintelligible to us?

We could observe which experiences the aliens seem to strive for and which they tend to avoid.  But teasing apart the desired conscious states from the side effects could be tricky.  Could an alien observer tell whether humans enjoy hangovers or going to the dentist?

This question strikes me as similar to the difficult task of determining whether an AI is conscious.  If an AI consistently avoids certain stimuli, does that mean it suffers when exposed to those stimuli?  If we already knew it was conscious, would we know even then?

It’s like we need a Rosetta stone of conscious experience.  The suffering is in the brain states, but perhaps cannot be decoded without a window into the subjective experience of similar brains.

However, the need for a Rosetta stone does not imply that the content of a mysterious message is not an empirical question.  It just may be an impenetrable question.

Furthermore, for humans, we do have the Rosetta stone in the form of our own personal experiences and the testimony of others.

Looks like I’m back in camp Harris.  For now.

 

Mental health overloaded

I met someone recently who was diagnosed with autism late in life.  He said that in a way, he found the diagnosis relieving because he was starting to wonder “Is something terribly wrong with me?”.  But, he says that the diagnosis hasn’t helped him figure out how to fix his very real problems.

He forms friendships but he is awkward meeting new people and in social situations.  He has trouble picking up on social norms and standards of behavior.  He struggles with the transition from friendship to more intimate connections such as romances and sexual relationships.  As a result he has been alone and celibate for 15 years.

He has access to a psychiatrist, but cannot afford the copays for a therapist who could help him learn the social skills he needs.

This struck me as an unacceptable lack of resources.  And it got me thinking.  The mental health sector seems to be taking on a lot.  I’m wondering if some of the education that goes on between therapist and client might be made more accessible.  Some of the things that my therapist teaches me could be taught in a class, and by someone with less specialized training than a psychologist.  I’m imagining low cost public classes for adults on relationships, communication, mindfulness techniques etc.  Wouldn’t that be less expensive than learning one-on-one from a trained therapist?

And wouldn’t the same be true for someone diagnosed late with autism seeking to learn how to improve his social skills?  Are there programs like what I’m thinking of?

I know there is some of this sort of thing out there.  My co-counseling organization fits into this category I think.  There are organizations that teach authentic relating techniques, groups that practice deep sharing and empathetic listening, and classes on non-violent communication.  I think we need more of this.  Being a human is complicated.  There is a lot of knowledge out there from science and from age-old cultural wisdom.  Maybe we can do a much better job at spreading that knowledge to both children and adults.