Dishwashers, Software, and Open Source

Also known as "How to fix a Dishwasher (and also Software)." Presented at TWG on October 8th, 2014.

Transcript

1. DISHWASHERS,
   SOFTWARE,
   AND OPEN SOURCE.
   

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3. CLEAN
   DISHES
   DISHWASHER
   DIRTY
   DISHES
   

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4. DIRTY
   DISHES
   DISHWASHER
   DIRTY
   DISHES
   

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5. DIRTY
   DISHES
   DISHWASHER
   BROKEN
   DIRTY
   DISHES
   

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6. BROKEN
   aside!
   

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7. “IT’S ”
   BROKEN
   aside!
   

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8. “IT’S ”
   BROKEN
   “It’s broken? Do you know
   what’s wrong with it? I can get
   someone out there to take a
   look next week or so, maybe.”
   aside!
   

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9. “IT’S ”
   BROKEN
   can mean “I’m surprised.”
   aside!
   

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10. “IT’S ”
    BROKEN
    can mean “I’m unhappy.”
    aside!
    

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11. “IT’S ”
    BROKEN
    expresses exactly 1 bit of information.
    aside!
    

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12. NOT
    BROKEN
    BROKEN
    aside!
    

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13. NOT
    BROKEN
    BROKEN
    DON’T
    REPLACE
    REPLACE
    aside!
    

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14. If you care about
    fixing something,
    you need to be
    more descriptive
    than “broken”.
    aside!
    

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15. DIRTY
    DISHES
    DISHWASHER
    “BROKEN”
    DIRTY
    DISHES
    

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16. DIRTY
    DISHES
    DISHWASHER
    “BROKEN”
    DIRTY
    DISHES
    opaque black box
    

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17. DIRTY
    DISHES
    DISHWASHER
    “BROKEN”
    DIRTY
    DISHES
    opaque black box
    WATER
    

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18. DIRTY
    DISHES
    DISHWASHER
    “BROKEN”
    DIRTY
    DISHES
    opaque black box
    WATER
    POWER
    

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19. DIRTY
    DISHES
    DISHWASHER
    “BROKEN”
    DIRTY
    DISHES
    opaque black box
    WATER
    POWER
    SOAP
    

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20. DIRTY
    DISHES
    DISHWASHER
    “BROKEN”
    DIRTY
    DISHES
    opaque black box
    WATER
    POWER HEAT
    SOAP
    

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21. DIRTY
    DISHES
    DISHWASHER
    “BROKEN”
    DIRTY
    DISHES
    opaque black box
    WATER
    POWER HEAT
    NOISE
    SOAP
    

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22. DIRTY
    DISHES
    DISHWASHER
    “BROKEN”
    DIRTY
    DISHES
    opaque black box
    WATER
    POWER HEAT
    WATER
    NOISE
    SOAP
    

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23. DIRTY
    DISHES
    DISHWASHER
    “BROKEN”
    DIRTY
    DISHES
    opaque black box
    WATER
    POWER HEAT
    WATER
    NOISE
    SOAP
    

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24. DIRTY
    DISHES
    DISHWASHER
    “BROKEN”
    DIRTY
    DISHES
    opaque black box
    WATER
    POWER HEAT
    NO
    WATER
    NOISE
    SOAP
    

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25. If we can’t look in the
    black box, then we
    can guess at what
    happens inside.
    

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26. DIRTY
    DISHES
    DISHWASHER
    “BROKEN”
    DIRTY
    DISHES
    opaque black box
    WATER
    POWER HEAT
    NO
    WATER
    NOISE
    Why is the machine not draining?
    SOAP
    

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27. HYPOTHESIS:
    THE DRAIN MECHANISM
    IS BROKEN
    

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29. “IT’S ”
    BROKEN
    

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30. “I’m pretty sure
    the drain pump
    is broken.”
    “IT’S ”
    BROKEN
    

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31. “I’m pretty sure
    the drain pump
    is broken.”
    “Oh, that’s easy to fix - I’ll
    order you a new one online
    and you can install it yourself.”
    

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32. What does this
    have to do with
    software?
    

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33. CLEAN
    DISHES
    DISHWASHER
    DIRTY
    DISHES
    opaque black box
    

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34. OUTPUT
    CLOSED SOURCE
    SOFTWARE
    INPUT
    opaque black box
    

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35. If we can’t look in the
    black box, then we
    can guess at what
    happens inside.
    

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37. OUTPUT
    CLOSED SOURCE
    SOFTWARE
    INPUT
    opaque “black” box
    

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38. OPEN SOURCE
    SOFTWARE
    OUTPUT
    INPUT
    transparent “white” box
    

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39. Open source means that we can
    look inside the box
    and
    fix problems more easily.
    

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40. “Mural Dishwasher”
    by Marie-Christine Lacasse & Marie Claude Savard, Université du Québec à Montréal
    

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41. Most software we all use
    is open source.
    We can’t be afraid to
    look “inside the box” and fix things.
    

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42. We’re hiring!
    Come help us use technology to solve problems.
    

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