Posts Tagged ‘control’

Perceptual control theory in a nutshell

Thursday, December 30th, 2010 at 12:43 pm by Jacqueline

Rock on

Are you familiar with perceptual control theory? If you aren’t, the basic idea is this: People are not rocks. As Philip Runkel puts it,

“Living creatures behave very differently from lifeless things. Unlike a rock, a human does not just sit until something bumps it.”
– Philip Runkel, “Casting Nets and Testing Specimens,” pg 75

several large rocks modified to look like faces
The idea is, organisms and agents and people get a bunch of different sensory inputs. They have some internal standards for what they want that set of sensory inputs to be like — some desired state of the world. The difference between how they want the world to be and what the world is actually like drives what they do — what we see as behavior.

The reason this is appealing to me? Perceptual control theory (PCT) says we’re not just input-output machines. Behavior is goal-directed and purposeful.

It’s a useful theory if you want to figure out why people are doing what they do and how to avoid or mediate conflict. Everyone has internal standards that they’re trying to control. As Runkel says,

“[M]ost of us very often act as if we expect other people to behave like rocks. And when we act toward other people as if they were rocks or blankets or typewriters or teacups, we make unending trouble for ourselves. It is true that people do have some features in common with rocks and typewriters. There are, however, important differences between living and nonliving things that most of us overlook time and time again, and to our sorrow.”
– Philip Runkel, “People as Living Things; The Psychology of Perceptual Control,” pg 14

If you want to learn more, I’ve found you a nice list of articles, an informative Less Wrong post a friend linked me to, a comprehensive website, and Google.

And yes, talking about PCT really just was my excuse to share those lovely quotes from Runkel.

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NASA LARSS: Aeronautics Student Forum

Thursday, August 26th, 2010 at 12:48 am by Jacqueline

Aeronautics Student Forum

Wednesday, August 4th. 10AM. The Aeronautics Student Forum.

four computers in a row on a tableMy lab is lined up in the front row, fidgeting, exchanging nervous glances. We trade seats between the other students’ presentations, taking turns with the laptop to read over the half-done powerpoint.

The motion tracking camera system is set up (we were in the building until 10pm the previous night, testing our hardware and software, ensuring it’d all be ready to demo). One of the cameras lurks beside the white screen, ominous, a constant reminder that it’s our turn in an hour, and like or not, we don’t have our finalized slides and some of us don’t even know for sure whether we’ll be speaking.

It was nerve-wracking.

It was also remarkably exciting.

Presentations, preparation, control

I usually plan presentations out to the last sentence. I know I’m not an improv whiz, so I practice my talk out loud over and over. Any slides I have, they’re done at least two nights ahead of time. Practice, preparation, organization. No need to worry because I have everything under control.

This presentation at the aero forum was the opposite.

The previous week, to the relief of my labmates, I’d tried to organize everything (the slides, the talks, the demo). But our mentor, Garry, told us not to worry about any of it.a white board covered in colorful diagrams He kept repeating that: don’t worry. It’s just a presentation.

None of us were convinced.

It wasn’t until Garry sat down with me and explained what he had in mind–how he was going to help compile photos and diagrams into a logical order–that I trusted he was right. No need to worry. He had given scores of presentations. He had good ideas. He frequently pulled things together last-minute. It’d be okay.

In short, when he explained that, I consciously relinquished control. I mentioned control (and the lack thereof) in the context of volleyball games with my lab. The same idea comes into play here: Setting perfectionism aside, trusting that someone else is competent enough to get the job done. Teamwork. All that good stuff.

Coming together last-minute

Garry showed up not long after 10AM, printed copies of the finalized powerpoint in hand. As our time slot approached, my labmates and I shuffled discretely through the slides, still worried, still anxious.

Our turn came. We trooped up to the podium, all nine of us. We spoke. Twenty minutes, all told (not too long, really), plus the demo. We explained our newly established Autonomous Vehicle Lab, its capabilities, and what the audience would see in the demo. We flew our quadcopter. We demonstrated object tracking and obstacle avoidance.

It went well. It went better than well: our presentation was splendid.

Everyone knew what to say. Everyone was clear, concise, and comprehensible. Perhaps it was because we were not prepared that we were prepared: rehearsing, in our minds, coherent sentences about our parts of the project. Recapitulating our work with the quadcopters, the DGPS system, the Vicon cameras, the many vehicles and pieces of software. Unsure of what we would need to say, and thus, preparing for the worst.

If not for Garry’s persistent “don’t worry about it”s, I would never have experienced a presentation this way. I’d have planned out that talk and every one after, never daring take a chance on not preparing enough and not practicing enough. Now I know. Our aero forum talk was proof: Things can come together last-minute.

That said, I think I still like having my slides done more than an hour before the presentation. As engrossing an adventure as it was, last-minute isn’t going to become my style.

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NASA LARSS: Volleyball, trust and teamwork

Tuesday, August 17th, 2010 at 2:24 pm by Jacqueline

A new sport

volleyball sitting in grass beside a brick wall - http://www.flickr.com/photos/83307029@N00/111440048/One of the difficult parts of playing a new sport is that I’m not good at it yet.

My lab played volleyball this summer. Every Wednesday after work, we trotted out to the grass behind the conference center, doing our best not to complain about the humidity and heat. We greeted the other two teams in the league (both of which had clearly played volleyball before–not just in gym class in high school, or, in my case, once during a summer program five years ago), we helped set up the nets, and we began bumping a ball around.

Volleyball was not where any of us excelled. Sure, by the end of the ten weeks, everyone in the lab had improved. We could do what might be called a volley. I could be in the right place at the right time to hit the ball, even if the ball then flew off in completely unintentional directions. When I served, the probability that the ball would both get over the net and stay in bounds was greater than chance (if I remembered to stand on the right, that is, because my serves always flew too far left). It was great fun.

It was also frustrating. I knew that given enough practice, I could be a half-decent volleyballer. Instead of the game being a matter of physical skills and pure luck, it could evolve into a complex, strategic battle, with us setting up plays and plotting out how to outwit the other team. But ten weeks isn’t quite long enough to get us to that point. (Sometimes, I’m impatient.) We lost just about every match played against the other teams.

Losing is hard to watch

My lab had split into two teams and recruited a few extra interns, so most days, the five or six of us on my team rotated through four spots on the court. This meant that some games, I stood on the sidelines during the game point.

That was difficult.

I had no direct control over whether we won or lost. I had to stand there, watching, as hands missed the ball, as the ball smacked the dusty grass, or flew too far out of bounds. I had no power over how hard my teammates tried (whether they desired to win enough to dive after the ball; whether they were tired and sweaty and just wanted it to be over). I could be a cheerleader, but I could not actively influence the outcome of the game.

That was new.

two fencers at the Denver NAC '05My usual sport is fencing: highly individual, always solo. When you’re on the strip, it’s just you. If you mess up, if you lose, you only have yourself to blame. Even in team competitions, you’re just adding up the scores you and your teammates have separately acquired. You don’t realize, unless you’ve been part of a team, how important it is to trust your teammates. And that’s what made volleyball difficult: because none of us were that good, it wasn’t easy to trust my teammates to be there, backing me up, putting in their best effort to win even though the games were casual and couldn’t be taken seriously given our level of experience.

The thing about trust is, most times, it has to be earned.

Trust and control

Fortunately for my lab, playing volleyball is not what we did full-time. When working on our summer project–establishing the Autonomous Vehicle Lab–I learned I could trust my labmates to have my back. We all cared about the outcome; we could trust each other to each do our part. Not being in control of every little detail (and occasionally standing on the sidelines) was okay, because I knew my labmates were trying just as hard as I was to debug their programs and get the quadcopters flying.

I guess the moral of the story is (besides the obvious “teamwork requires trust”), if you ever have the chance to play a new sport, do so. You never know what you’ll learn.

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Expectations, Perspectives, and Misery

Saturday, July 24th, 2010 at 9:42 am by Jacqueline

Your expectations define your perceptions

It’s raining.

Fat, corpulent water globules cascade from the sky. Plop, plop. A drop, and a few of its compatriots, dribble down the inside of your collar. They’re cold. Wet, and unpleasant. The drops slither down your neck.

rain splattering on the pavement in front of a green bushy area

“Take my cloak,” he [Lord Golden] suggested.

“It would only get as wet as the rest of me. I’ll change into dry things when I get back.” [Fitz]

He didn’t tell me to be careful, but it was in his look. I nodded to it, steeled myself, and walked out into the pouring rain. It was every bit as cold and unpleasant as I expected it to be. I stood, eyes squinted and shoulders hunched to it, peering out through the gray downpour. Then I took a breath and resolutely changed my expectations. As Black Rolf had once shown me, much discomfort was based on human expectations. As a man, I expected to be warm and dry when I chose to be. Animals did not harbor any such beliefs. So it was raining. That part of me that was wolf could accept that. Rain meant being cold and wet. Once I acknowledged that and stopped comparing it to what I wished it to be, the conditions were far more tolerable. I set out.

Fool’s Errand, Robin Hobb

Keep it in perspective

Keep what in perspective? Well, everything, but particularly the bad things, the frustrating things, and the irritating things. So it’s raining. So you cut your finger slicing potatoes. So it’s ninety-nine degrees Fahrenheit and humid. You are in some set of circumstances and you wish to be in some other set of circumstances. You wish to be dry. You wish your finger didn’t hurt. You wish to be cool and comfortable without drops of sweat sliding down your neck.

Unfortunately, we don’t live in a world where wishes change the world’s physical properties. We have limited control over our environments. We have slightly more control over our reactions to our environments.

“Since we cannot change reality, let us change the eyes that see reality.” —Nikos Kazantzakis

What you expect significantly influences how you will perceive your circumstances. The thing is, a lot of times, we don’t explicitly set out our expectations. You leave the air-conditioned building with the continued implicit expectation that you’ll be cool and comfortable, and when that blast of muggy, sticky air hits you, it hits you twice as hard because you’re expecting something else.

What can you do about this? Try explicitly setting up your expectations. It may help prevent the disappointment of being wrong (and feeling unpleasant). Instead of thinking “Aaugh, I’m getting wet and the rain is cold, why can’t I be warm and dry?” try thinking “Okay, I’m going out in the rain so I’ll be wet and cold. That’s just how rain is.” Keep in mind that this works both ways–sure, you can set yourself up to expect to feel better about your circumstances, but you can also easily set yourself up to expect to feel worse.

As a final note, I’m sharing to a quote I occasionally turn to as a reminder to keep things in perspective, from Nick Hornby’s High Fidelity (on the subject of pop music):

“Did I listen to music because I was miserable? Or was I miserable because I listened to music?”

Are you miserable because of your circumstances, or are your circumstances miserable because of your misery?

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Anger, Compassion & Patience

Monday, May 17th, 2010 at 6:13 am by Jacqueline

At the Tibetan monastery retreat I attended last month, Ani Kunga led a meditation session for the group about compassion and anger. I said I’d talk about it more: here goes.

Prayer flags hung in a bare-limbed tree

Positive > Negative

I’m going to make two assumptions. First, that positive emotions are, in most circumstances, better ones to be feeling. I’ve never considered anger and its cohorts–hate, irritation, stress, jealousy, and so on–to be very useful emotions, per se: they solve far fewer problems and make a person feel far less happy than any number of positive emotions. This isn’t to say that some amount of anger or related emotions isn’t ever beneficial–e.g., when down 1-4 in a fencing bout, as motivation to come back and win–just that, overall, I find positive emotions to lead me to be happier and more productive than negative ones. Surprise, surprise.

Second, that people have some amount of control over their emotions. By ‘some amount,’ I mean that a person tends to have at least some control over his or her environment, as well as some control over what he/she is actively doing in that environment, both of which influence emotions.

Given these premises, and given the choice, why wouldn’t a person pick positive emotions over negative ones?

Patience & Anger

As the group of us relaxed into our meditation cushions, enjoying the sunshine and the spring weather, Ani Kunga shared a statement underlying many of the Tibetan Buddhist approaches to dealing with anger:

“If there’s something you can do, why are you unhappy? Just do it. If there’s nothing you can do, why are you unhappy?”

She proceeded to explain a few methods for dealing with situations involving angry people:

  1. Get away from it. Often, removing yourself from the situation can help diffuse it. E.g., physically leaving the room, or mentally removing yourself: watching TV, losing yourself in a book, a drink to take the edge off. This method doesn’t always work. Sometimes, ignoring a problem situation only makes it worse.
  2. Pretend you’re dealing with a sick person; i.e., that the angry person you are dealing with is not mentally all there. This is more to remind you to be patient. Act as if the angry person is your patient and you the doctor, as if he/she is a child and you the parent, or as if you are a student and he/she is your teacher. Yes, that’s right: Dealing with angry people is a lesson in patience.

She also explained a core Tibetan Buddhist concept. Patience, Ani Kunga said, is the main antidote for anger. Anger should be turned into compassion, and fear should be turned into love. She led our group through a meditation session to demonstrate a technique for developing compassion. It involved picturing a person you know, imagining his/her happiness and suffering, and then imagining drawing his/her suffering away such that he/she can be happier.

Bottom Line

Although I may not agree with everything Ani Kunga told us, I do (unsurprisingly) like the core message: be proactive. If there’s something you can do, just do it. And if there’s nothing you can do, well, why not try to spend your time doing things more useful than worrying?

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