Wasn't it Slime who wrote:
>> Some experiments showed that it was not uncommon to have a long unlucky
>> streak of random choices and end up with poor results, so I tried also
>> stepping in the opposite direction, and this seemed to give a
>> considerable improvement.
>
>Perhaps, if stepping in a certain direction is successful (it reduces the
>radius), you should make the next step in the same direction.

Oddly, experiments show that tends to make it worse.

-- 
Mike Williams
Gentleman of Leisure

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