Mistakes, yes. 300 years? No. 300 years, including the Carolingian Dynasty, the expansion of Islam (i.e. The Battle of Tours), the Norse expansion (eventually leading to the domination of Europe by a bunch of guys named Norman)? Nope, no so much. And that's before you start looking at Islamic, Indian, and Asian data.
And then there's radiometric dating and dendrochronology, which are chaotic in their own right, but 300 years? Nah.
Weirdly, I was just reading Lynn White's Medieval technology and social change (1966), discussing the introduction of the stirrup and the heavy plow (as opposed to the scratch plow), both of which happened in this period. There's little in the way of good dates, but some very big changes such as the move from individual family subsistence farms to large, ridge-and-furrow strips and Charles Martel's redistribution of church lands to his followers, introducing true heavy cavalry and the feudal system. (Note: may be a bit out of date with modern research.)
And then there's radiometric dating and dendrochronology, which are chaotic in their own right, but 300 years? Nah.
Weirdly, I was just reading Lynn White's Medieval technology and social change (1966), discussing the introduction of the stirrup and the heavy plow (as opposed to the scratch plow), both of which happened in this period. There's little in the way of good dates, but some very big changes such as the move from individual family subsistence farms to large, ridge-and-furrow strips and Charles Martel's redistribution of church lands to his followers, introducing true heavy cavalry and the feudal system. (Note: may be a bit out of date with modern research.)