[Avodah] Machlokes in Mishnayos, why?

[Micha Berger via Avodah]

On Mon, Sep 11, 2017 at 8:20pm EDT, Zev Sero wrote:
: I don't believe the differences between BH & BS emerged until well
: after H & S were gone, when a new generation arose "asher lo yad`u
: va'asher lo ra'u".

Indeed, isn't that the implication of blaming the explosuion of
machloqesin on "shelo shimshu kol tarkan" (Sanhedrin 88b)? If
the teachers were still around, then they could have stepped in
when the lack of proper attentiveness showed up.

Tir'u baTov!
-Micha