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Author Topic:   Getting to No
Percy
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From: New Hampshire
Joined: 12-23-2000
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(1)
Message 1 of 16 (761518)
07-02-2015 10:55 AM


As some might have guessed, the title of this thread is a play on the book title Getting to Yes. Today's NYT has an illustrative little puzzle (How Good Are You at Solving Problems?) that highlights one of the most important tenets of science, carefully exploring all the ways you might be wrong.
How many "No's" will you get before deciding you know the answer?
--Percy

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Percy
Member
Posts: 22504
From: New Hampshire
Joined: 12-23-2000
Member Rating: 4.9


(2)
Message 8 of 16 (761591)
07-02-2015 9:04 PM


I lost the page where I entered my guesses, but I had a number of no's. I checked integers, decimals, negative values and constants like pi and e (didn't accept them, only accepts properly formatted numbers). It doesn't have infinite precision - for example, it will give this a no:
1.0000000000000000000000001 1.0000000000000000000000002 1.0000000000000000000000003
Given this, now what's the rule?
--Percy

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 Message 9 by xongsmith, posted 07-02-2015 9:22 PM Percy has replied

  
Percy
Member
Posts: 22504
From: New Hampshire
Joined: 12-23-2000
Member Rating: 4.9


Message 12 of 16 (761597)
07-02-2015 10:13 PM
Reply to: Message 9 by xongsmith
07-02-2015 9:22 PM


xongsmith writes:
Did you make sure to try some negative progressions in both directions and one across 0.0?
Yes. But no matter how many tests we make there's always the possibility of exceptions, e.g., their test could be:
if (a < b && b < c && a != 1.2345)...
In which case the rule would be, "Each number is greater than the one before and the first number cannot be 1.2345."
--Percy

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