No.
That graph shows the probability of the whole system working correctly (aka as the user expect) if each component is 99% correct.
I confirm this.
But I cannot say how severe is the bug you will face. I never said "nothing work anymore".
> That doesn't happen in practice with the actual operating systems (and other systems) that we use.
You overlook the failures.
Each big or small failure count in that graph.
> They have a choice between Microsoft Office and LibreOffice, both of which are crap.
Sorry I explained me badly.
Gabriel says this in a more diplomatic way: "users have already been conditioned to accept worse than the right thing".
"Conditioned" aka manipulated aka marketing.
I meant that by only proposing crap against crap you promote crap.