Re: Confirmation of Shannon's Mistake about Perfect Secrecy of One-time-pad

On Nov 9, 3:07 am, wangyong <hell...@xxxxxxx> wrote:
On 11 8 , 7 52 , matt271829-n...@xxxxxxxxxxx wrote:





On Nov 8, 7:01 am, wangyong <hell...@xxxxxxx> wrote:

On 11 8 , 9 44 , William Hughes <wpihug...@xxxxxxxxxxx> wrote:

On Nov 7, 8:31 pm, wangyong <hell...@xxxxxxx> wrote:

On 11 7 , 11 45 , William Hughes <wpihug...@xxxxxxxxxxx> wrote:

On Nov 7, 10:15 am, wangyong <hell...@xxxxxxx> wrote:

On 11 7 , 8 53 , William Hughes <wpihug...@xxxxxxxxxxx> wrote:

On Nov 7, 7:38 am, wangyong <hell...@xxxxxxx> wrote:

i consider C fixed, k uniform, regardless P prior

This assumption is only correct if
P is uniform.

So any conclusion you draw from this
assumption will be correct only if
P is uniform.

If P is not unform, the conclusion that
P is uniform is incorrect.

So there is no contradiction between
the incorrect conclusion that P
is uniform and the fact that P
is not uniform.

- William Hughes

i consider C fixed, k uniform, regardless P prior
This assumption is only correct if
P is uniform.
====it is This assumption to get the result that
P is uniform.

An assumption that "get[s] the result" that
P is uniform is only correct if P is uniform.
If P is not uniform the assumption is incorrect.

So any conclusion you draw from this
assumption will be correct only if
P is uniform.
==i just get P is uniform

And this is only correct if P is uniform.

If P is not unform, the conclusion that
P is uniform is incorrect.
So there is no contradiction between
the incorrect conclusion that P
is uniform and the fact that P
is not uniform.

==========they are obvious contradiction.

No

An *incorrect* conclusion that P is uniform
does not contradict the fact the P is not uniform.

- William Hughes

- -

- -- -

- -

<snip evasion>

My comment was that

there is no contradiction between
the incorrect conclusion that P
is uniform and the fact that P
is not uniform.

Your reply was

they are obvious contradiction

Do you continue to maintain this position?

- William Hughes- -

- -

======I just to show the two conclusion is imperfect and incorrect.I
do not say any of them are correct, just to say they are contradiction
and do not coexist, then the compromise. just like the four feet of
a table.
YOu just insist one is correct and one is incorrect.
you just insist key uniform incorrect, but P Prior correct. but the
latter is also incorrect.

I'm not exactly sure what point you've reached in your exchanges with
William, but let me dip in again and ask you a question.

Do you think that the whole theory of conditional probability is
somehow flawed due to this mysterious "contradiction" and
"compromise"...

... OR, do you think that conditional probability calculations work in
some circumstances, but just not in the OTP case?

Which is it?

Please try to give a direct answer to the question.- -

- -

I'm not exactly sure what point you've reached in your exchanges with
William, but let me dip in again and ask you a question.

Do you think that the whole theory of conditional probability is
somehow flawed due to this mysterious "contradiction" and
"compromise"...

... OR, do you think that conditional probability calculations work
in
some circumstances, but just not in the OTP case?

-----work ,but the condition c is fixed is not considered by any of
you.
the condition is considered, the probablity can not compute by
nowadays theories.
you question has different meanings
Which is it?
I think it work if all condition is considered, not ingore.

Just for a moment, forget the OTP problem. Pretend that you've never
even heard of the OTP. Please study the following question.

I have two coins, one red and one blue. Both are marked "0" on one
side and "1" on the other, and both are fair (i.e. they both come up
"0" with probability 1/2, and "1" with probability 1/2). I toss both
coins. The red coin comes up with the number R. The blue coin comes up
with the number B. I calculate C = R Xor B, and I find that C = 0.
Given that C = 0, what is the probability that R = 0?

Do you think that this question has a well-defined single numerical
answer?

(Please try to give a direct reply to the actual question that I have
asked. If possible, please begin your reply with the word "yes" or the
word "no".)

.

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