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Liz Keogh
@lunivore
A story
because we all love
     sleeping
Build beliefs

  Draw conclusions

Generate assumptions

     Filter data

    Observe data
Cydonia, Viking 1, 1976
Cydonia, Viking 1, 1976
Scenarios



       Given a context
   When an event happens
Then an outcome should occur
Examples


Given Fred has bought a microwave
   And the microwave cost £100
  When we refund the microwave
Then Fred should be refunded £100.
Context Questioning


Is there a context in which
    this event will create
    a different outcome?
Cydonia, Mars Reconnaisance Orbiter, 2006
Martian channels
by Percival Lowell
Confirmation Bias
                       Think we’re right




Feel really good!      Look for validation
Confirmation Bias
               Think we’re right




Boo!           Find out we’re not
System                             Illusion of
  justification    Normalcy bias transparency Decoy effect
                                                Insensitivity
             Confirmation Loss Aversion
                       False                     to sample
  Bandwagon                                             Fundamental
                  Bias
                     consensus Pessimism              size
     effect                                               Attribution
      Negativity       effect
          bias         159 Cognitive
                              Omission
                                      bias                   Error
                                                     Distinction
Optimism bias Hyperbolic
                                bias                      bias
                         Biases on
                          Google effect Overconfidence
                 discounting
         Illusion of                                Cryptomnesia
  Restraint bias
           Control      Wikipedia
                              Naïve
                             cynicism
                                              effect

                Pseudocertainty                   Actor-
                                                        Stereotyping
Anchoring             effect                    Observer
                                                           Choice-
       Apophenia                                    Bias
                                              Worse-than-
                              Pareidolia                 supportive
      Trait                                      average bias
   ascryption           Forer effect                   Congruence
                                                   effect
       bias                             Moral luck
Build beliefs

  Draw conclusions

Generate assumptions

     Filter data

    Observe data
Scenarios



       Given a context
   When an event happens
Then an outcome should occur
Traditional

             Rework



Developers            Testers



    Deliberate Discovery skills
Behavior Driven Development

                              Less Rework



  Testers          Developers           Testers



Deliberate Discovery skills
Context Questioning


Is there a context in which
    this event will create
    a different outcome?
Outcome Questioning



Is this the only outcome
      that matters?
Options have value.

  Options expire.

 Never commit early
unless you know why.
The Huddle




   Developer
Assumption Questioning


Is there a different context
which might have produced
       this outcome?
“Nobody loves me.”
A story
because we all love
     sleeping
Liz Keogh
liz@lunivore.com
@lunivore

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Liz Keogh story sleeping