[bombcar]

I guess they're arguing that the "fail deadly" design was a design flaw, even if it should never have been encountered in actual operation.

[mjb]

Indeed. See "Why INSAG has still got it wrong" by Anatoly Dyatlov himself. The money quote:

> How and why should the operators have compensated for design errors they did not know about?

Dyatlov is clearly biased here, but he raises excellent questions.