If an essence’s existence is known to be contingent, then this essence has necessarily emerged into existence. This is because the specifier that preferred existence for that contingent would either be:
If the specifier were contingent, then the above would apply to it as well. And this cannot regress to the past infinitely, given the impossibility of Tasalsul.
If the specifier were necessary, then either this specifier was:
- Able to leave the contingent non-existent.
- Unable to leave the contingent non-existent.
If the necessary specifier was able to leave the contingent non-existent, then this contingent would be emergent. This is because it is impossible to leave a beginningless effect non-existent. And if the effect is not beginningless, then the effect is emergent.
If the necessary specifier was unable to leave the contingent non-existent, then the contingent will necessarily exist if the specifier exists. And since the specifier in this case is necessary, then its non-existence is impossible. So since the specifier’s non-existence is impossible, then the non-existence of its contingent effect would also be impossible. However, if non-existence were impossible for the contingent effect, then this contingent effect would be non-contingent. This is contradictory, and is therefore impossible.
Thus, if an essence’s existence were contingent, then this essence is necessarily emergent.
 In other words, if the specifier were contingent, then that specifier would itself be contingent upon a second specifier to have preferred its existence. And that second specifier would either be necessary or contingent. And so on, and so forth.
 Such that there is no possible world where this contingent does not exist.
 Since a contingent essence is by definition, one that accepts both existence and non-existence. So if a contingent did not accept non-existence, then this contingent would be a non-contingent.