Look at this:
On that note, don't you remember the time Stalin said:
What do you mean, Marxism is junk economics?
Look at all these great factories we've built!
Hang on, that plaque says 'founded in 1903 by our beloved Czar.'
Psst... Vassily, do you know who this boy is?
Yes, he is a revisionist rabble-rouser with a radically undialectical, mathematical-infantilist ideological understanding of bourgeois chronology.
Ah! Well that's settled then!
MAINSTREAM CHRONOLOGISTS TO THE GULAGS, COMRADES!