The sociology of the history of science—related to sociology and philosophy of science, as well as the entire field of science studies—has in the 20th century been occupied with the question of large-scale patterns and trends in the development of science, and asking questions about how science "works" both in a philosophical and practical sense. Science as a social enterprise In the last few centuries, science as a social enterprise has grown rapidly. The few individuals who could conduct natural research in antiquity were either wealthy individuals themselves, had wealthy sponsors, or had the backing of a religious group. Today, scientific research has tremendous government support and also ongoing support from the private sector. Available methods of communication have improved tremendously over time. Instead of waiting months or years for a hand-copied letter to arrive, today scientific communication can be practically instantaneous. Earlier, most natural philosophers worked in relative isolation, due to the difficulty and slowness of communication. Still, there was a considerable amount of cross-fertilization between distant groups and individuals. Nowadays, almost all modern scientists participate in a scientific community, hypothetically global in nature (though often based around a relatively few nations and institutions of stature), but also strongly segregated into different fields of study. The scientific community is important because it represents a source of established knowledge which, if used properly, ought to be more reliable than personally acquired knowledge of any given individual. The community also provides a feedback mechanism, often in the form of practices such as peer review and reproducibility. Most items of scientific content (experimental results, theoretical proposals, or literature reviews) are reported in scientific journals and are hypothetically subjected to peer scrutiny, though a number of scholarly critics from both inside and outside the scientific community have, in recent decades, began to question the effect of commercial and government investment in science on the peer review and publishing process, as well as the internal disciplinary limitations to the scientific publication process. A major development of the Scientific Revolution was the foundation of scientific societies: Academia Secretorum Naturae (Accademia dei Segreti, the Academy of the Mysteries of Nature) can be considered the first scientific community; founded in Naples 1560 by Giambattista della Porta. The academy had an exclusive membership rule: discovery of a new law of nature was a prerequisite for admission. It was soon shut down by Pope Paul V for alleged sorcery.