See revision 2 to my answer here.
The revision was done by the community user, whose profile (ID = -1) says:
Hi, I'm not really a person.
I'm a background process that helps keep this site clean!
I do things like
- Randomly poke old unanswered questions every hour so they get some attention
- Own community questions and answers so nobody gets unnecessary reputation from them
- Own downvotes on spam/evil posts that get permanently deleted
If this is the case, then why did the community user change the text of the answer from "The Semichah that was given through the time of the Gemara" to "The Semichah that was given through the time of the
Gemara Mishna" with the comment: "Rav Yehuda Hanasi (who wrote the mishna) was the last to have smicha. None of the Ravs in the Gemara had real smicha"? If someone wants to make an edit to actual content, it should be done in their own name!
Besides the fact that the correction is just wrong (see here, paragraph that starts with "רבי מתווה להרבות בסמיכה" which gives sources as to how Rebbi told his son to give semicha to his students, and how Rebi Yehoshua ben Levi (a 3rd century Amora who lived long after Rebi) gave semicha to everyone in his yeshiva.