What does everyone have against Rome?

[MiniMe]

I never knew art of conjuring concrete was not known to Byzantines. Intresting. How so?
Oh, I see it, in fact they were greeks and thus underdeveloped in comparison to Ze "Best at everything" uber-romans.
And, since the discussion went this way, please tell me about the rest of rome glorious achievements that these filthy pervert greeks somehow managed to forget or diminish.
Thanx in advance