Original sentence: , and, by extension, any work influenced by them, and so on.Quantifiability, or at least precise definition, are essential to productive philosophical and scientific discussion; in its indeterminacy of definition, the thing in itself was in the opinion of many later philosophers a blunder in Western philosophy; however, it influenced various works by Hegel, Nietzsche, Schopenhauer, etc
Edited sentence: Quantifiability, or at least precise definition, are essential to productive philosophical and scientific discussion; in its complete indeterminacy, the thing in itself was in the opinion of many modern philosophers one of the greatest blunders in Western philosophical thought