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[Darwinian]

The idea that everything has a cause became very popular after Newtonian physics came along. The universe seemed to work like clockwork where everything was orderly and followed cause and effect.

Then Einstein and quantum physics came along and we learned that the very fundamental smallest building blocks have very strange rules and the universe is not so orderly. And cause and effect do not necessarily follow.

In quantum physics there are many cases where the effect comes before the cause. For example, it may seem that a vacuum is devoid of all matter but close study shows that particles are winking into existence and out again for no apparent reason. What happens here is that two particles with opposite mass simply appear from nowhere, hang around for a while to what's going on and then promptly annihilate each other. They actually 'borrow' energy from their future in order to exist in their past. A sort of effect then cause. (Unless there's a black hole nearby but will go into Hawking's radiation another day)

So basically this idea you have that everything must have a cause, whilst seeming logical, is not actually correct.