What is a repetition?
Popular examples so far include numbers and physical objects being counted, but it is all fraught with space-time conceptions. A fraction of a number carrying on infinitely is not infinity. Supposing that 1 unit may be added or subtracted infinitely is not infinity.
When defining infinity, why believe that we can apply space-time ...
1) The burden of proof is borne by whoever makes the claim that is easiest to prove.
Absolute non existence of something is impossible to prove, but please notice how your rephrasing into :
"There exists at least one universe in which Object A does not exist."
also narrowed the conditions. If you were to narrow it further into:
"A glass of water does not ...
A burden of proof falls under the auspices of speech acts. Anyone disrupting a conversation by bringing disagreement to it has an obligation to make things right, as it were, and explain one's self. It is completely a social construct. This is the principle of "onus probandi", be the application in general conversation or in a legal setting.
A burden of ...
St Augustine wrote extensively and subtly on free will. You might try:
Augustine, On Free Choice of the Will
ISBN 10: 0872201880 / ISBN 13: 9780872201880
Published by Createspace Independent Publishing Platform, United States, 2015.
Or more recently :
Plantinga, Alvin, The Nature Of Necessity (Clarendon Library Of Logic & Philosophy) (Clarendon ...