The Law Causality

I disagree.Firstly, how can we be sure anything has a cause anyway - what does it mean to have a cause? I am not at all sure this can be answered in a manner that would enable us to deduct or even infer that all things have a cause.Secondly, what do you mean by happens? Can you define this in a way which does not presuppose that happening is dependent on a cause?Thirdly, why is it so difficult to believe in something without a cause? Billions of traditional Christians, Jews, Muslims and Hindus do so with some dedication.

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still i think which atom is affected is irrelevent as long as the action has a cause

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But how can you know it has a cause? How can you know for sure that a cause and effect relationship exists between any two things?