Why do private member variables behaved like protected in the same module when creating deriving class?

[12345swordy]

On Friday, 26 October 2018 at 21:46:27 UTC, Laurent Tréguier 
wrote:
> On Friday, 26 October 2018 at 21:42:37 UTC, 12345swordy wrote:
>> ...Did you read the other post that I made before you made 
>> that reply?
>>
>> I swear I am repeating myself ad nauseam.
>
> You simply seemed to be implying that private had the same 
> effect as protected, which isn't the case.
... How can I make my self any more clear here!? When I say y 
behaves like x it I don't means y is exactly the x! Nor does it 
imply that!