I was not clear. 
I don't see when the direction of the flow of bits would be of
importance, for any of my past uses. The way I picture it in my mind is
>>|entrance .. exit|>> but it could be the other way around for sure.

What *seems* of value is the fact that bits close to the entrance
reflect recent usage and are most significant, when bits close to the
exit can be 20 minutes in the past (or more), hence less significant. 
I never used this information and simply tested a queue for 0/not 0.

I imagine that if the empty queue sums to 0 (the way I see it), 
- a full queue would value *something big*, lets say 255,
- a queue with only the oldest possible bit set would sum to 1
>>|00000001|>>,
- updating the most recent (significant) bit to 0 on a full queue
would drop the sum from 255 to 127 >>|01111111|>>

Now, how 64 >>|01000000|>> depicts indeed a higher activity hint than
63 >>|00111111|>> eludes me... Maybe it is a bad idea to try looking
for anything else than 0/not 0 ?


-- 
epoch1970

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