Video: 3x Explore, Expand, Extract - Kent Beck

November 15th, 2020

3x Explore, Expand, Extract - Kent Beck

(https://www.youtube.com/watch?v=FlJN6_4yI2A)

 

Question, to be asked early on.

 

 

small investment - big investment (---)

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return on investment (red line)

 

waterfall resurgence

1) let's first do a market survey

2) let's do a business model refinement

3) let's then develop

4) QA

 

 

new product development with waterfall

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large investment, small chance of payout

 

 

Question: what do you have to lose?

first question I need to ask, to decide how to operate

 

 

EXPLORE

until you find a growth loop

scratch the right spot

same thing as before, extreme result

not a rational process, or someone else would have done it already

absurd ideas, crazy idea

nobody else is stupid enough to try a bad idea

"how hard would it be to try it"

laughter is a good sign

trade-off: short term, throw away, hack

opposition: indifference

economy of scope: "how little work can I do in order to validate some question"

all about learning, creativity, coverage of the space

 

 

EXPAND scale

people care about the idea

barriers to growth: money, floor space, network bandwith, ...

each obstacle is existential: fail one, no princess

economy of risk: "capital is cheap, risk is really expensive"

throwing money at problems

different discipline: engineering, management, ...

all about finding the next thing that's going to kill you

barriers to growth

focused, short period of time

extra hours makes a difference

sitting in the same room makes a difference

 

EXTRACT value

long term kicks in

automated testing

KPI

 

 

exploration is binary (either 0 or massive)

expansion is one number that's gonna kill us

extraction has balanced scorecard

 

Can you run Exploration and Extract projects at the same time?

-> Facebook

more complicated as a manager

 

explorers

expanders floating around

extracter

 

expand projects trump everything:

explore: small change of high payoff

expand: high change of high payoff

extract: high change of small payoff

-> missing expand = missing the most valuable thing

 

 

Facebook everyone is measured on impact

specific numeric goals

works well in explore/expand

extract: smaller improvements, longer projects -> game the system

incentives are all about looking at the upsides, but nothing for looking at the potential downsides

 

extract: move from impact/outcome -> good decision making

"I'm not gonna add my feature, it's just gonna be too much"

 

---

 

question: What do I have to lose?

 

twitter is my platform to explore

"what do people want me to talk about?"

twitter -> engagement

20x

 

soundcloud to explore

record one after another

see what get's engagement

 

---

 

Explore mode:

don't analyse

figure out how to experiment

 

Expand mode:

figure out what the next barrier to growth is

address it

get ready for the next one

 

Extract mode:

how can I make a little improvement

 

---

 

 

Should you write tests?

That depends: do you have anything to lose?

No

Well, only write the tests that help you experiment quicker

 

 

No estimates

explore: estimates are waste

extraction: estimates are important data