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On 12/01/2011 2:07 PM, Invisible wrote:
> (So far, my mother hasn't actually let me use it at all.)
What?
--
Regards
Stephen
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On 12/01/2011 02:09 PM, Stephen wrote:
> On 12/01/2011 2:07 PM, Invisible wrote:
>> (So far, my mother hasn't actually let me use it at all.)
>
> What?
Well, if I *used* it, I might break it, right? And that would be a
catastrophe. Obviously.
*sigh*
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On 12/01/2011 2:17 PM, Invisible wrote:
> On 12/01/2011 02:09 PM, Stephen wrote:
>> On 12/01/2011 2:07 PM, Invisible wrote:
>>> (So far, my mother hasn't actually let me use it at all.)
>>
>> What?
>
> Well, if I *used* it, I might break it, right? And that would be a
> catastrophe. Obviously.
>
> *sigh*
A man or a mouse?
Squeak! Squeak! :-P
--
Regards
Stephen
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On 12/01/2011 02:48 PM, Stephen wrote:
> A man or a mouse?
>
> Squeak! Squeak! :-P
Oh, I *have* used it. I just don't tell me mum that. :-P
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I've been practising "open orbits". That's basically where you make the
diabolo travel in a circle, by rolling it along the length of the
string, throwing it from one end, and catching it on the other (and then
rolling it along the string back to the first end again).
The only actually difficult part of all this is the catching. Assuming
that you actually catch the damned thing, it's obviously pretty easy to
roll it along the string and then throw it (although throwing it in the
right general direction is mildly tricky).
A practised for an hour or two at the weekend. Generally I either miss
the first or second catch completely, or I manage about 6 catches and
then drop it. I kept a tally, and my personal best was 7 catches. On one
fluke occasion I reached 9, and eventually even 10.
On Monday I had a go in my lunch break, and managed to reach 11, 12 and
eventually even 14. And on one particularly fluky run, I hit 16.
I didn't practise at all yesterday, but I had a go just now. After
several 4s and 5s, I somehow managed to pull off 51 consecutive catches,
utterly /annihilating/ my previous personal best of 16. That's over 3x
better performance!
Astonished, I of course immediately tried again, and scored 33
consecutive catches. Nowhere near as impressive as 51, but still more
than double my previous best.
Since then, I haven't managed to get near 50 again, but I have managed
several teens and a few twenties. For whatever reason, I seem to have
suddenly made a quantum leap in my skills. O_O
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Le 13/01/2011 14:36, Invisible a écrit :
> For whatever reason, I seem to have suddenly made a quantum leap in my
> skills.
You are now expecting a high count... that's more pressure on you, and
therefore you fail.
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On 13/01/2011 01:36 PM, Invisible wrote:
> I've been practising "open orbits". That's basically where you make the
> diabolo travel in a circle, by rolling it along the length of the
> string, throwing it from one end, and catching it on the other (and then
> rolling it along the string back to the first end again).
http://www.diabolotricks.co.uk/trick/orbits.html
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On 13/01/2011 01:41 PM, Le_Forgeron wrote:
> Le 13/01/2011 14:36, Invisible a écrit :
>> For whatever reason, I seem to have suddenly made a quantum leap in my
>> skills.
>
> You are now expecting a high count... that's more pressure on you, and
> therefore you fail.
If I had just made one run of 51 catches, and then gone back to being
able to only do 2 or 3, that would be very fluky, but not too
surprising. However, I now suddenly seem to be able to regularly exceed
10 or sometimes even 20 catches. I have no idea why I can suddenly do
that - but I like it!
Need to figure out how the hell to correct for tilt though. (Something
that none of the tutorial videos or websites ever talk about. Actually,
most learning resources are fairly minimal...)
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On 13/01/2011 01:36 PM, Invisible wrote:
> The only actually difficult part of all this is the catching.
Suppose the probability of a catch is unconditionally P. How does the
length of a typical series of consecutive catches vary as a function of P?
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On 13/01/2011 02:27 PM, Invisible wrote:
> Suppose the probability of a catch is unconditionally P. How does the
> length of a typical series of consecutive catches vary as a function of P?
Apparently catching or dropping the diabolo can be regarded as a
Bernoulli trail, and thus performing an open orbit is a kind of
Bernoulli process. In particular, the number of failures before a
success is achieved (or, conversely, the number of successes before the
first failure) follows a geometric distribution.
Specifically, if the probability of catching the diabolo is P, then the
probability of *not* catching it must be 1-P. Apparently the probability
of K successes followed by one failure is
Prob K = P^K * (1-P)
Thus, each series of catches of length K+1 is a factor of P less
probable than a series of length K.
All of this of course assumes that the trails are *independent*, which
they manifestly are not...
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