What is a proof?

[justin]

and prove to you that your deduction is faulty and Billy is indeed a black swan. Then you must change your assumptions to:

a) Swans are either black or white.
b) Billy is a swan.
c) Therefore Billy is black or white.

You are correct
This proof fails because its premises is false (or not accurate)

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1:It is weak because it relies on probability, deductive does not.
and i just said that

I only disagree with the word "weak"
you should change it to probable because a probability of 0.001 is not equal to another of 0.999

The fact that is probable and leaves the door open to evidence that could change the stance of truth. This is why it is called weak. Only in comparison to deductive because of a guaranteed conclusion. So use probable if want it works the same.