It shows that the Autobiography rather understates the amount of work done.
Even this, however, understates the case, seeing that a really inscrutable Unknowable would destroy all confidence in the order of nature and render all knowledge entirely precarious.
Because its meaning has to be imputed, we have tended to describe it in terms of prior technologies—which, in many cases, understates its potential by many orders of magnitude.
understates the extent of the change throughout the year.
However looking at the full year understates the extent of the change throughout the year.