the developer's guide to learning effectively
TRANSCRIPT
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Arthur Doler@arthurdoler
Handout:
THE DEVELOPER’S GUIDE TO
LEARNING EFFECTIVELYThe stuff your brain wishes you knew
http://bit.ly/2yjzbjM
None
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1. You don’t learn like you think you do
2. What we call “learning” is a bunch of different mechanisms
3. Feeling discomfort and strain is good for you
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WHAT’S YOUR PERSONAL HISTORY WITH
LEARNING?
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WHAT ABOUT LEARNING TYPES?
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Google.com search for “types of learning”, retrieved on 2017/06/15
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1.Visual
2.Aural
3.Verbal
4.Physical
5.Logical
6.Social
7.Solitary1.Visual
2.Auditory
3.Read-Write
4.Kinesthetic
1.The Linguistic Learner
2.The Naturalist.
3.The Musical or Rhythmic
Learner
4.The Kinesthetic Learner
5.The Visual or Spatial Learner
6.The Logical or Mathematical
Learner
7.The Interpersonal Learner
8.The Intrapersonal Learner
1.Visual
2.Auditory
3.Kinesthetic
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“…the appropriate design was used in only about 20 studies, and the results of most of them are compellingly negative.“
“By contrast, we are aware of only three appropriately designed studies that yielded a positive finding like that described in our hypothetical example, and these findings are not very convincing.”Rohrer & Pashler, 2012
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“Although there are a multitude of inventories and models for assessing learning styles, most are not reliable (Coffield, Moseley, Hall, & Ecclestone, 2004).”
“Is there support for either prediction –for educational practice, or barring that, at least that the theory might be correct (even if it’s not helpful)? No.”Willingham, Hughes, and Dobolyi, 2015
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REALLY, THEY’RE KIND OF THE SAME
THING…
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THEORY OF ACTION
A set of assumptions we have and actions we can perform in order to achieve a goal
Argyris and Schön, Theory in Practice, 1974
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GOVERNING VARIABLES
The constraints we operate under when using our theory of action
Argyris and Schön, Theory in Practice, 1974
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WE CHANGE OUR THEORIES OF ACTION IN
TWO WAYS:
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SLIGHT IMPROVEMENTS AS WE LEARN
THROUGH IMPLICIT MEMORY, NEUROPLASTICITY, AND MYELINATION
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HUGE, CONSCIOUS CHANGES BROUGHT ON
BY DILEMMAS WE FACE DUE TO OUR
THEORIES THAT REQUIRE US TO COGNITIVELY
ENGAGE
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A FEW EXAMPLES
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WHY WOULD THEY BE DIFFERENT?
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•Lying about their espoused theory
•Cognitive biases and tacit knowledge
•Desire for cognitive ease
•Cognitive dissonance
•The list goes on…
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Be able to describe your theories
Try things that will disprove your assumptions (if you can)
Go TDD-style when building a theory
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SKILL
A measure of your ability to behave effectively in situations of action
Argyris and Schön, Theory in Practice, 1974
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WHAT MATTERS MORE IS WHETHER THE
KNOWLEDGE IS:
EXPLICIT
IMPLICIT
OR TACIT
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EXPLICIT KNOWLEDGE
Knowledge that can be readily articulated, codified, accessed and verbalized
Hélie & Sun, 2010
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TACIT KNOWLEDGE
Knowledge that cannot be articulated or codified but instead can only be gained through experience or watching someone perform a task
Polanyi, Personal Knowledge, 1958
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IMPLICIT KNOWLEDGE
Knowledge that is not explicit, but couldbe articulated and codified with effort
Nonaka & Takeuchi, 1995
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Build times & unit test times
Time to get peer review results
Try some katas to get quick coding feedback
Limiting WIP keeps your loops shorter by default
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EXPLICIT MEMORY
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Set up experiments:
Form hypotheses about why something is the way it is – then go try to disprove
them
Allow yourself to go on explorative tangents
Budget time for curiosity
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IMPLICIT MEMORY
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Find a mentorOr a digital mentor
Or buy a mentor
Listen to other people
Watch other’s PRs or have group PRs
Be mindful & listen to your implicit memory
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MYELINATION
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From, Eilam, Bar-Lev, Levin-Zaidman, Tsoory, LoPresti, Sela, Arnon, and Aharoni, 2014
Zalc and Fields, 2000
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From, Eilam, Bar-Lev, Levin-Zaidman, Tsoory, LoPresti, Sela, Arnon, and Aharoni, 2014
Zalc and Fields, 2000
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NEUROPLASTICITY & NEUROGENESIS
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Image Sources: Canadian Society for Brain, Behaviour and Cognitive Science (CSBBCS) (https://www.csbbcs.org/images/donald_hebb.jpg)Georg-August University of Göttingen (https://www.uni-goettingen.de/admin/bilder/pictures/1070d7880621130dd098fe388aab9259.jpg)
“Neurons that fire together, wire together.Neurons that fire out of sync, fail to link.”– Siegrid Löwel’s summary of Hebbian Theory
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SYSTEM 1 IS OFTEN WHAT LEARNS
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BUT ALMOST ALL LEARNING REQUIRES US TO
USE SYSTEM 2 AT SOME POINT
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INTENTIONAL LEARNING USUALLY REQUIRES
EVALUATING OUR OWN SUCCESS
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WELL…
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Kahneman, Thinking, Fast and Slow
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Kahneman, Thinking, Fast and Slow
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Know what mental effort feels like for you
Once you feel it: rest, reset, repeat!
Try switching your context for a quick rest
Catch yourself taking the easy way out
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WOULD SOME PITHY QUOTES HELP?
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Image Source: Wikimedia (https://en.wikipedia.org/wiki/Ginni_Rometty#/media/File:Ginni_Rometty_at_the_Fortune_MPW_Summit_in_2011.jpg)
“Growth and comfort do not coexist.”
– Ginni Rometty, CEO of IBM 2011 – Present
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Image Source: Chicago Tribune (http://www.trbimg.com/img-559d3cfb/turbine/chinews-mary-schmich-20130507)
“Do one thing every day that scares you.”
– Mary Schmich, Chicago Tribune
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Image Source: Wikimedia (https://upload.wikimedia.org/wikipedia/commons/d/d5/Ralph_Waldo_Emerson_ca1857_retouched.jpg)
“Always do what you are afraid to do.”
– Popularized by Ralph Waldo Emerson
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Image Source: Wikimedia (https://upload.wikimedia.org/wikipedia/commons/2/22/Eleanor_Roosevelt_portrait_1933.jpg)
“You must do the thing you think you cannot do.”
– Eleanor Roosevelt, First Lady
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OKAY, HERE’S SOME ACTUAL REASONS
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REASON 1:
THE COMFORT ZONE BREEDS HOLY WARS
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if (x < 0) {
puts("Negative");
} else {
nonnegative(x);
}
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if (x < 0)
{
puts("Negative");
}
else
{
nonnegative(x);
}
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REASON 2:
ESCAPING LOCAL MAXIMA
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Take the time to learn shortcuts
Try out the command line
Automate things
ASK WHY!
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REASON 3:
NEUROPLASTICITY & NEUROGENESIS
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LEARNING THINGS ENABLES US TO KEEP
BEING ABLE TO LEARN NEW THINGS & AVOIDS
DEGENERATION WITH AGE
Fernández-Ballesteros, Molina, Schettini, and del Rey, 2012
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Hand-write your notes
Draw it out or print it out and shuffle it
Fidget & move
Use brainstorming techniques that involve varied types of input
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REASON 4:
GROWTH AS A PERSON AND A DEVELOPER
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Write a blog post
Give a talk
Get accepted for a talk to force yourself to learn it
“Rubber duck”/“Cardboard cutout” debugging
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REASON 5:
TMFI
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Eddie Obeng, Qube.cc
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We have to be good at learning…
AND at knowing what we have to learn…
Or we can’t keep up.
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TO SUMMARIZE
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WE LEARN VIA SEVERAL DIFFERENT
PROCESSES, ALMOST ALL OF WHICH REQUIRE
SYSTEM 2
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WE CAN TELL IF WE’RE ACTUALLY LEARNING
BY NOTING THAT WE FEEL COGNITIVE
EFFORT
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BURN YOUR COMFORT ZONE!
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CHASING THAT EFFORT KEEPS US PUSHING
FORWARD AND LEARNING
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SEEK NOVELTY & CHANGE
EXPOSE OURSELVES TO AS MANY VIEWPOINTS
AS WE CAN
BE OPEN TO BEING SURPRISED
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USE AS MANY PARTS OF THE BRAIN AS WE
CAN WHEN LEARNING
USE MULTIPLE SENSES
TELL SOMEONE ELSE WHAT YOU LEARNED
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CONSCIOUSLY EVALUATE YOUR THEORIES OF
ACTION, DOUBLE-LOOP-STYLE