Would someone be kind enough to tell me whether the sentence below is OK, considering that 'fashioned' is a past tense verb, 'believe' is a present tense verb, and refuse' is also a present tense verb.
The people who initially fashioned and those who now believe that the theory and its predictions are well grounded refuse to accept . . . ."
Putting a comma after 'that' seems to separate the subject from its direct object, and rewriting the sentence in the following way made it too wordy:
The people who initially fashioned the theory and its predictions, and the people who now believe that both are well grounded, refuse to accept . . . ."
Thanks very much.