The only difference between cladistics and Linnean systematics is that the former assumes that kinds are real (as race biology) and the latter doesn’t (as traditional empirical science).
This difference is, however, fundamental – the former ultimately leading to paradoxical contradiction and the latter ultimately being ambiguous. They encircle a fundamental problem that in traditional empirical science is called “Heisenberg’s uncertainty principle” and in logic “Russell’s paradox”.
This problem appears as a consequence of the common structure of languages, but the empirical fact that time is relative to speed in space supports that it is a real phenomenon. As such, it has been called “the empty middle”.