We can form the hypothesis that:
a. Compatibility with the accredited sciences is an official doctrine considered as an accepted fact and which Scientologists do not feel the need to justify. Or,
b. The legitimation of this belief is a question of personal experience rather than attachment to an official position.
c. That Scientological technology replaces science.
We should also note that the Church of Scientology has changed from its formative years. It describes itself as a specific religious movement; the legitimacy that the Church seeks nowadays is less positioned on a scientific level than before.