Theism generally holds that God exists realistically, objectively, and independently of human thought; that God created and sustains everything; that God is omnipotent and eternal; and that God is personal and interacting with the universe through, for example, religious experience and the prayers of humans. Theism holds that God is both transcendent and immanent; thus, God is simultaneously infinite and in some way present in the affairs of the world. Not all theists subscribe to all of these propositions, but each usually subscribes to some of them (see, by way of comparison, family resemblance). Catholic theology holds that God is infinitely simple and is not involuntarily subject to time. Most theists hold that God is omnipotent, omniscient, and benevolent, although this belief raises questions about God's responsibility for evil and suffering in the world. Some theists ascribe to God a self-conscious or purposeful limiting of omnipotence, omniscience, or benevolence. Open Theism, by contrast, asserts that, due to the nature of time, God's omniscience does not mean the deity can predict the future. Theism is sometimes used to refer in general to any belief in a god or gods, i.e., monotheism or polytheism.