A prediction is made about a future event, which can be restated using the construction y will
happen if x happens first (an alternate form is if x happens, y will happen). The subjunctive verb form would expresses remoteness and thus casts some doubt on the likelihood of x. The verb form "will fail" expresses the likelihood x with greater certainty. Density is not a countable quantity, so it cannot be modified by more numerous, which is used solely for countable quantities; greater is
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happen if x happens first (an alternate form is if x happens, y will happen). The subjunctive verb form would expresses remoteness and thus casts some doubt on the likelihood of x. The verb form "will fail" expresses the likelihood x with greater certainty. Density is not a countable quantity, so it cannot be modified by more numerous, which is used solely for countable quantities; greater is
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