Swerve and Uniformity

As has been previously discussed, a significant problem with the derivation of Free Will from Swerve is that the former entails control and predictability.  The focus on this feature of Lucretius' system thus tends to distract from its perhaps most radical characteristic--the thesis that existence is fundamentally random, a view that has had few prominent subsequent advocates, e. g. Nietzsche, but only in places.  Now, a challenge for a system based on this principle is the unarguable fact of the regularity of at least some of existence, even if it is not as absolute and certain as it is usually taken to be.  But, Lucretius has the resources to meet that challenge.  For, Swerve is not the only motion that occurs in his system--its pre-Swerve given is atoms moving in a straight line.  Hence, there are two principles in his system: Swerve and Uniformity, i. e. the latter obtaining at non-Swerve moments, such that all activity is constituted by a combination of the two, with regularity, e. g. natural laws, one possible combination, another being the combination of spontaneity and control that constitutes Free Will.