Question 1046756
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I don't know what is written in the original source (textbook ?).


I see only what is written in this post.


Diagnosis: Nonsense.


Is there any reason to discuss it here? In this forum?


I don't think so.
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To be honest, a fair part of the posts in this forum (I think ~ 10%) are of the same level and the same quality.


Sometimes I think: who is sitting on the other end of the Internet, opposite to me, and sends such posts to the forum?