“Unfortunately, in some discussions of quantum theory, the terms ‘uncertainty’ and ‘indeterminacy’ are used interchangeably, despite their different meanings. Throughout this book, I use these terms with distinctive meanings: while ‘uncertainty’ refers to a lack of knowledge, ‘indeterminacy’ refers to the state of being indeterminate (lacking definiteness). That is, uncertainty is an epistemic issue, while indeterminacy is an issue of ontology” (Barad 2007, 424–25).