White certainly refutes the idea of the Middle Ages being all darkness, ignorance and brutality. The technological developments during that period were stunning, but we normally do not appreciate them because they are the foundation of our world and we take them for granted.
She explains the evidence for e.g. stirrups, horseshoes, the crank etc in its historical context e.g. early findings in China, which is helpful but more helpful (for me) is the aspect of social change. For example, the heavy plough was better than the scratch plough for most soil types north of the Alps, but it needed more power (oxen) which then necessitated more cooperation in a village but the result was a better harvest. Later, horses had their advantages (faster workers) and disadvantages (oat consumers).
With this kind of explanation a lot of history makes eminent sense.
The footnotes take up far too much space - up to 1/3 of a page.
White assumes that all her readers understand latin and doesn't translate any of the quotes which are presumably relevant.
She also assumes that her readers already understand the construction of cranks, treadles etc. There is not a single drawing anywhere and the pictures showing engravings etc are tucked away at the back ... after the index.