Even more almost done
An quote from A.N. Whitehead's Modes of Thought, page 15:
"Great advances in thought are often the result of fortunate errors. These errors are the result of oversimplification. The advance is due to the fact that, for the moment, the excess is not relevant to the use of the simplified notions. One of the chief examples of this truth is Aristotle's analysis into genus, and species, and sub-species. It was one of the happiest ideas possible, and it has clarified thinking ever since. Plato's doctrine of "division" was an anticipation, vague and hazy. He felt its value. It did not do much good, by reason of its lack of decisive clarity. Among sensible people, Aristotle's mode of analysis has been an essential feature in intellectual progress for two thousand years.
"Of course, Plato was right and Aristotle was wrong. There is no clear division among genera; there is no clear division among species; there is no clear division among sub-species. That is to say, there are no clear divisions when you push your observations beyond the presuppositions on which they rest. It so happens, however, that we always think within limitations."