3x Explore, Expand, Extract - Kent Beck ( https://www.youtube.com/watch?v=FlJN6_4yI2A )
Question, to be asked early on.
small investment - big investment (—)
return on investment (red line)
waterfall resurgence
- let’s first do a market survey
- let’s do a business model refinement
- let’s then develop
- QA
new product development with waterfall
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”
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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
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Should you write tests? That depends: do you have anything to lose? No Well, only write the tests that help you experiment quicker
Model: 3x for estimates Model: 3x for estimates No estimates explore: estimates are waste -> great idea in exploration, because you’ve never done it before -> estimate is just a guess, no value, wasted effor extraction: -> estimates are important data for making decisions -> do I do project A or project B