Vigorously challenged yet widely ignored,the theory had languished for half a century ,primarily due to its lack of a plausible mechanism to support the proposed drift.

• 因受到有力的挑战进而广泛地遭遇冷淡，这个理论萧条了半个世纪，这主要是因为缺乏可信的漂移机制来证明其论点。