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JanelleCShane's profile
Janelle Shane
Janelle Shane
Janelle Shane
@JanelleCShane

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Janelle Shane

@JanelleCShane

I blog at http://aiweirdness.com . My book "You Look Like a Thing and I Love You" is out now! Research Scientist in optics. she/her. http://wandering.shop/@janellecshane 

Boulder, CO
janelleshane.com
Joined April 2014

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    Janelle Shane‏ @JanelleCShane 13 Mar 2018

    Janelle Shane Retweeted mike cook

    This paper is gold.https://twitter.com/mtrc/status/973607380721242112 …

    Janelle Shane added,

    mike cook @mtrc
    I maintain that computational evolution is the best way to simultaneously be incredibly impressed by AI and also have all your illusions about it shattered. https://twitter.com/jeffclune/status/973605950266331138 …
    Show this thread
    12:10 PM - 13 Mar 2018
    • 630 Retweets
    • 1,165 Likes
    • carina S Klotz Dave pillsy Selva DaVince Andrew Harris Nevertheless Gary Davis
    12 replies 630 retweets 1,165 likes
      1. New conversation
      2. Janelle Shane‏ @JanelleCShane 13 Mar 2018

        I love it.pic.twitter.com/ygkeiYOOxn

        Figure 1. Exploiting potential energy to locomote. Evolution discovers that it is simpler to design
tall creatures that fall strategically than it is to uncover active locomotion strategies. The left figure shows
the creature at the start of a trial and the right figure shows snapshots of the figure over time falling and
somersaulting to preserve forward momentum.
        6 replies 65 retweets 305 likes
        Show this thread
      3. Janelle Shane‏ @JanelleCShane 14 Mar 2018

        Essentially discovering flaws in the Matrix and exploiting them for superpowers.pic.twitter.com/mOxSgaduYg

        The physics simulator first used a simple Euler method for numerical integration, which worked
well for typical motion. However, with faster motion integration errors could accumulate, and some
creatures learned to exploit that bug by quickly twitching small body parts. The result was the equivalent
of obtaining “free energy,” which propelled the opportunists at unrealistic speeds through the water.
        5 replies 162 retweets 550 likes
        Show this thread
      4. Janelle Shane‏ @JanelleCShane 14 Mar 2018

        And this one is just spooky. To win, it found where the answers were stored and Deleted Them. Resulting in a perfect score.pic.twitter.com/rqEQUGVdNs

        In other experiments, the fitness function rewarded minimizing the difference between what the
program generated and the ideal target output, which was stored in text files. It turned out that one of the
individuals had deleted all of the target files when it was run! With these files missing, because of how the
test function was written, it awarded perfect fitness scores to the rogue candidate and to all of its peer
        15 replies 203 retweets 606 likes
        Show this thread
      5. Janelle Shane‏ @JanelleCShane 14 Mar 2018

        This program won at Tic-Tac-Toe by figuring out how to remotely crash its opponents' computers, causing them to forfeit.pic.twitter.com/cNCUuHTluT

        The capstone project was a five-in-a-row Tic Tac Toe competition played on an infinitely
large board... enabled the system to request non-existent moves very, very far away in the tic-tac-toe board.
The other players dynamically expanded the board representation to include the location of the
far-away move—and crashed because they ran out of memory, forfeiting the match!
        11 replies 702 retweets 1,440 likes
        Show this thread
      6. Janelle Shane‏ @JanelleCShane 14 Mar 2018

        This one hacked a list-sorting task by simply deleting the list so that it was technically no longer unsorted.pic.twitter.com/Ejvce6dr0q

        However, rather than actually
repairing the program (which sometimes failed to correctly sort), GenProg found an easier solution: it
entirely short-circuited the buggy program, having it always return an empty list, exploiting the
technicality that an empty list was scored as not being out of order.
        15 replies 97 retweets 397 likes
        Show this thread
      7. Janelle Shane‏ @JanelleCShane 14 Mar 2018

        Another algorithm discovered that rather than minimizing force, it could apply such a huge force that it overflowed the simulator's memory and registered as zero instead. Of course, the pilot would die, but hey. Perfect score.pic.twitter.com/aTaqs0bq9Y

        By
overflowing the calculation, i.e. exploiting that numbers too large to store in memory “roll-over” to zero,
the resulting force was sometimes estimated to be zero. This, in turn, would lead to a perfect score,
because of low mechanical stress on the aircraft, hook, cable, and pilot.
        1 reply 111 retweets 377 likes
        Show this thread
      8. Janelle Shane‏ @JanelleCShane 14 Mar 2018

        More exploitation of flaws in the Matrix: Glitching into the floor would result in a repelling force that could be harnessed for free energy. The algorithm first had to learn to manipulate time so the glitching was possible.pic.twitter.com/JGhN9ld5B8

        Evolved behavior is shown in frames, where time is shown progressing
from left to right. A large time steps enable the creatures to penetrate unrealistically through the ground
plane, engaging the collision detection system to create a repelling force, resulting in vibrations that propel
the organism across the ground.
        6 replies 86 retweets 356 likes
        Show this thread
      9. Janelle Shane‏ @JanelleCShane 15 Mar 2018

        If "kill all humans" is the easiest solution to a problem, then machine learning will do that unless prevented.

        6 replies 98 retweets 327 likes
        Show this thread
      10. Janelle Shane‏ @JanelleCShane 15 Mar 2018

        But good news! It would have to be the *easiest* solution to the problem. And killing all humans is really hard.

        13 replies 49 retweets 234 likes
        Show this thread
      11. Janelle Shane‏ @JanelleCShane 15 Mar 2018

        If "bake an unbelievably delicious cake" also solves the problem and is easier than "kill all humans", then machine learning will do *that* instead.

        27 replies 79 retweets 312 likes
        Show this thread
      12. Janelle Shane‏ @JanelleCShane 31 Mar 2018

        Another example from that paper: Robots had to learn to drive toward a light. Instead of driving straight toward it as expected, they discovered that it worked much better to spin toward the light.pic.twitter.com/tClKESheJZ

        The path of the hand-coded Braitenberg-style movement (left) and evolved spinning movement (right) when moving towards a light source.
        0 replies 6 retweets 41 likes
        Show this thread
      13. End of conversation

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