Given my recent post on falsely assuming that God’s eternality excludes the possibility that He has a cause (and thinking premise 1 of the kalam cosmological argument proves He doesn’t have a cause), I thought it fitting to address atheists who assume that the universe, if it is eternal, is uncaused.  Some atheists reason as follows:

(1) If the universe began to exist, then it has a cause
(2) The universe did not begin to exist
(3) Therefore the universe did not have a cause

This commits the fallacy of denying the antecedent.  The form of the fallacy is as follows:

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