Slide 1

Slide 1 text

by Mario Fusco [email protected] @mariofusco Bias Driven Development

Slide 2

Slide 2 text

A bias is a thinking pattern that leads to systematic mistakes of judgment

Slide 3

Slide 3 text

No content

Slide 4

Slide 4 text

1. Too much information: we are overloaded by information, so we aggressively filter. Some of the what we leave out is actually useful and important

Slide 5

Slide 5 text

2. Not enough meaning: we imagine details that were filled in by our assumptions, and construct meaning and stories that aren't really there.

Slide 6

Slide 6 text

3. Need to act fast: quick decisions can be seriously flawed. Some of the quick reactions and decisions we jump to are unfair and counter-productive

Slide 7

Slide 7 text

4. What should we remember?: our memory reinforces errors. Some of the stuff we remember for later just makes all of the above systems more biased

Slide 8

Slide 8 text

No content

Slide 9

Slide 9 text

Framing effect: people react to a particular choice in different ways depending on how it is presented

Slide 10

Slide 10 text

No content

Slide 11

Slide 11 text

Choice-supportive bias: when you choose something, you tend to feel positive about it, even if that choice has flaws

Slide 12

Slide 12 text

Confirmation bias: seeking and prioritising information that confirms your existing beliefs

Slide 13

Slide 13 text

Well traveled road effect: travelers estimate the time taken to traverse routes differently depending on their familiarity with the route. Frequently traveled routes are assessed as taking a shorter time than unfamiliar routes

Slide 14

Slide 14 text

Overconfidence: some of us are too confident about their own abilities, and this causes us to take greater risks in our daily lives The amount of damages that you can cause with a wrong decision is proportional to the level of overconfidence with which you take it

Slide 15

Slide 15 text

Law of triviality (or bikeshedding): giving disproportionate weight to trivial issues

Slide 16

Slide 16 text

Narrative bias: refers to tendency to make sense of the world through stories

Slide 17

Slide 17 text

Bandwagon effect: believing or doing something because people around you believe or do it

Slide 18

Slide 18 text

Placebo effect: when simply believing that something will have a certain effect on you causes it to have that effect

Slide 19

Slide 19 text

Ostrich effect: the decision to ignore dangerous or negative information by “burying” one’s head in the sand, like an ostrich

Slide 20

Slide 20 text

Not invented here syndrome IKEA effect: consumers place a disproportionately high value on products they partially created

Slide 21

Slide 21 text

Pro-innovation bias: when a proponent of an innovation tends to overvalue its usefulness and undervalue its limitations

Slide 22

Slide 22 text

Semmelweis effect is a metaphor for the tendency to reject new evidence or new knowledge because it contradicts established norms

Slide 23

Slide 23 text

Dunning- Kruger Effect: unskilled individuals overestimate their abilities and experts underestimate theirs

Slide 24

Slide 24 text

The effect of the Dunning-Kruger Effect

Slide 25

Slide 25 text

Availability heuristic: overestimate the importance of information that is easy to recall

Slide 26

Slide 26 text

Bias blind spot: we recognize the impact of biases on the judgement of others, while failing to see the impact of biases on our decisions

Slide 27

Slide 27 text

A non-repeatable process producing few great successes and many miserable failures We got what we deserved for making software development a craftsmanship instead of an engineering discipline

Slide 28

Slide 28 text

We are engineers, not craftsmen or even worse artists

Slide 29

Slide 29 text

In engineering art is (at most) the mean not the goal

Slide 30

Slide 30 text

Those who cannot develop software, teach software development methodologies

Slide 31

Slide 31 text

Life is easier on giants' shoulders It's a curious thing about software industry: not only we do not learn from our mistakes, we also don't learn from our successes - Keith Braithwaite

Slide 32

Slide 32 text

Listen to listen, not to take a pause and think what you'll say next

Slide 33

Slide 33 text

Newer does NOT always mean better

Slide 34

Slide 34 text

Measure Measure Measure

Slide 35

Slide 35 text

Enlarge your professional toolbox

Slide 36

Slide 36 text

I said professional = … and yes, I am biased too

Slide 37

Slide 37 text

Dubito ergo Cogito