Article summary and answer:
The article discusses the possibility of reconciling general relativity (GR) and quantum mechanics (QM) into a unified theory of quantum gravity (QG). Both GR and QM are well-established theories, but they are fundamentally incompatible. Numerous attempts have been made to unify them, including string theory and loop quantum gravity. However, these theories still face significant challenges, such as the difficulty of quantizing gravity and the lack of experimental evidence.
The answer to the question posed in the article’s title is that, while progress has been made towards reconciling GR and QM, a fully satisfactory and experimentally verified theory of QG has not yet been achieved. Further research and exploration are necessary to achieve a unified theory of quantum gravity.