[natmaka]

> The flaws in the RBMKs which were known before Chernobyl were fixed afterwards

Indeed, and it shows that the design wasn't flawed to the point of condemning it: a fix was possible. Implication: even a non-major flaw can trigger a disaster.

> (with changes that had been proposed before Chernobyl)

Indeed, and it shows that even detected problems sometimes aren't fixed. This is not reserved to the USSR: Fukushima also showed it (it was well-known that the seawall/levee wasn't high enough, as recalled in my previous post here the nearby Onagawa plant had an adequate levee).