This is the principle we adopt in metaphysical studies. Everything is changing with time. Although time may be changing in cycles, there are cycles within cycles and even if a small cycle may be repeated, the enveloping larger cycle may be not and even if the larger cycle has come to the same point, a yet larger enveloping cycle may be not. Nothing can be repeated in identical conditions considering the span of life of human beings or even human civilization.
To require metaphysical theories to obey scientific discipline is simply fundamentally erred as repeatability is denied by the Principle of Change (or the Dao of Yi 易之道).
For example, when I cast coins to obtain a Gua to answer a certain question, even if someone else is casting the same kind of coins at the same location and time asking the same question, the result is unlikely the same. This is because the way I send my message cannot be the same as how others are doing. The human mind as an antenna to send and receive signals is very different from person to person.
Different realms are governed by different principles. Metaphysics has its own value even if a scientific minded person does not agree with this. It has always been my wish that metaphysics will gain the proper recognition for what it is by the scientific world.