Metaphilosophy (sometimes called philosophy of philosophy) is "the investigation of the nature of "philosophy". Its subject matter includes the aims of philosophy, the boundaries of philosophy, and its methods. Thus, while philosophy characteristically inquires into the nature of being, the reality of objects, the possibility of knowledge, the nature of truth, and so on, metaphilosophy is the self-reflective inquiry into the nature, aims, and methods of the activity that makes these kinds of inquiries, by asking what is philosophy itself, what sorts of questions it should ask, how it might pose and answer them, and what it can achieve in doing so. It is considered by some to be a subject prior and preparatory to philosophy, while others see it as inherently a part of philosophy, or automatically a part of philosophy  while others adopt some combination of these views.  The interest in metaphilosophy led to the establishment of the journal "Metaphilosophy in January 1970.
Although the term metaphilosophy and explicit attention to metaphilosophy as a specific domain within philosophy arose in the 20th century, the topic is likely as old as philosophy itself, and can be traced back at least as far as the works of "Plato and "Aristotle. 
Some philosophers consider metaphilosophy to be a subject apart from philosophy, above or beyond it, while others object to that idea. "Timothy Williamson argues that the philosophy of philosophy is "automatically part of philosophy", as is the philosophy of anything else. Nicholas Bunnin and "Jiyuan Yu write that the separation of first- from second-order study has lost popularity as philosophers find it hard to observe the distinction. As evidenced by these contrasting opinions, debate persists as to whether the evaluation of the nature of philosophy is 'second order philosophy' or simply 'plain philosophy'.
Many philosophers have expressed doubts over the value of metaphilosophy. Among them is "Gilbert Ryle : "preoccupation with questions about methods tends to distract us from prosecuting the methods themselves. We run as a rule, worse, not better, if we think a lot about our feet. So let us... not speak of it all but just do it."
The designations metaphilosophy and philosophy of philosophy have a variety of meanings, sometimes taken to be synonyms, and sometimes seen as distinct.
"Morris Lazerowitz claims to have coined the term 'metaphilosophy' around 1940 and used it in print in 1942. Lazerowitz proposed that metaphilosophy is 'the investigation of the nature of philosophy'. Earlier uses have been found in translations from the French. The term is derived from "Greek word "meta μετά ("after", "beyond", "with") and "philosophía φιλοσοφία ("love of wisdom").
"The distinction between philosophy and metaphilosophy has an analogue in the familiar distinction between mathematics and metamathematics."— Paul K. Moser, Metaphilosophy, p. 562
"When we ask, "What is philosophy?" then we are speaking about philosophy. By asking in this way we are obviously taking a stand above and, therefore, outside of philosophy. But the aim of our question is to enter into philosophy, to tarry in it, to conduct ourselves in its manner, that is, to "philosophize". The path of our discussion must, therefore, not only have a clear direction, but this direction must at the same time give us the guarantee that we are moving within philosophy and not outside of it and around it."— Martin Heidegger, Was Ist Das--die Philosophie? p. 21
Some other philosophers treat the prefix "meta as simply meaning 'about...', rather than as referring to a "metatheoretical 'second-order' form of philosophy, among them "Rescher and Double. Others, such as "Williamson, prefer the term 'philosophy of philosophy' instead of 'metaphilosophy' as it avoids the connotation of a 'second-order' discipline that looks down on philosophy, and instead denotes something that is a part of it. Joll suggests that to take metaphilosophy as 'the application of the methods of philosophy to philosophy itself' is too vague, while the view that sees metaphilosophy as a 'second-order' or more abstract discipline, outside philosophy, "is narrow and tendentious".
In the "analytical tradition, the term "metaphilosophy" is mostly used to tag commenting and research on previous works as opposed to original contributions towards solving "philosophical problems.
"Ludwig Wittgenstein wrote about the nature of philosophical puzzles and philosophical understanding. He suggested philosophical errors arose from confusions about the nature of philosophical inquiry. In the "Philosophical Investigations, Wittgenstein wrote that there is not a metaphilosophy in the sense of a "metatheory of philosophy.
"C. D. Broad distinguished Critical from Speculative philosophy in his "The Subject-matter of Philosophy, and its Relations to the special Sciences," in Introduction to Scientific Thought, 1923. "Curt Ducasse, in Philosophy as a Science, examines several views of the nature of philosophy, and concludes that philosophy has a distinct subject matter: "appraisals[disambiguation needed]. Ducasse's view has been among the first to be described as 'metaphilosophy'.
"Henri Lefebvre in Metaphilosophie (1965) argued, from a Marxian standpoint, in favor of an "ontological break", as a necessary methodological approach for critical social theory (whilst criticizing "Louis Althusser's "epistemological break" with subjective Marxism, which represented a fundamental theoretical tool for the school of Marxist structuralism).
"Paul Moser writes that typical metaphilosophical discussion includes determining the conditions under which a claim can be said to be a philosophical one. He regards "meta-ethics, the study of "ethics, to be a form of metaphilosophy, as well as "meta-epistemology, the study of "epistemology.
Many sub-disciplines of philosophy have their own branch of 'metaphilosophy', examples being Meta-aesthetics, "Meta-epistemology, "Meta-ethics, "Meta-ontology, and so forth. However, some topics within 'metaphilosophy' cut across the various subdivisions of philosophy to consider fundamentals important to all its sub-disciplines. Some of these are mentioned below.
Some philosophers (e.g. "existentialists, "pragmatists) think philosophy is ultimately a practical discipline that should help us lead meaningful lives by showing us who we are, how we relate to the world around us and what we should do.["citation needed] Others (e.g. "analytic philosophers) see philosophy as a technical, formal, and entirely theoretical discipline, with goals such as "the disinterested pursuit of knowledge for its own sake". Other proposed goals of philosophy include "discover[ing] the absolutely fundamental reason of everything it investigates", "making explicit the nature and significance of ordinary and scientific beliefs", and unifying and transcending the insights given by science and religion. Others proposed that philosophy is a complex discipline because it has 4 or 6 different dimensions.
Defining philosophy and its boundaries is itself problematic; "Nigel Warburton has called it "notoriously difficult". There is no straightforward definition,["verification needed] and most interesting definitions are controversial. As "Bertrand Russell wrote:
"We may note one peculiar feature of philosophy. If someone asks the question what is mathematics, we can give him a dictionary definition, let us say the science of number, for the sake of argument. As far as it goes this is an uncontroversial statement... Definitions may be given in this way of any field where a body of definite knowledge exists. But philosophy cannot be so defined. Any definition is controversial and already embodies a philosophic attitude. The only way to find out what philosophy is, is to do philosophy."— "Bertrand Russell, The Wisdom of the West, p.7
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Philosophical method (or philosophical methodology) is the study of how to do philosophy. A common view among philosophers is that philosophy is distinguished by the ways that philosophers follow in addressing philosophical questions. There is not just one method that philosophers use to answer philosophical questions.
Recently, some philosophers have cast doubt about intuition as a basic tool in philosophical inquiry, from Socrates up to contemporary philosophy of language. In Rethinking Intuition various thinkers discard intuition as a valid source of knowledge and thereby call into question 'a priori' philosophy. "Experimental philosophy is a form of philosophical inquiry that makes at least partial use of "empirical research—especially "opinion polling—in order to address persistent "philosophical questions. This is in contrast with the methods found in "analytic philosophy, whereby some say a philosopher will sometimes begin by appealing to his or her "intuitions on an issue and then form an "argument with those intuitions as "premises. However, disagreement about what experimental philosophy can accomplish is widespread and several philosophers have offered "criticisms. One claim is that the empirical data gathered by experimental philosophers can have an indirect effect on philosophical questions by allowing for a better understanding of the underlying psychological processes which lead to philosophical intuitions.
A prominent question in metaphilosophy is that of whether or not philosophical progress occurs and more so, whether such progress in philosophy is even possible. It has even been disputed, most notably by "Ludwig Wittgenstein, whether genuine philosophical problems actually exist. The opposite has also been claimed, for example by "Karl Popper, who held that such problems do exist, that they are solvable, and that he had actually found definite solutions to some of them.
David Chalmers divides inquiry into philosophical progress in metaphilosophy into three questions.
Its primary question is "What is philosophy?"
The philosophy of philosophy is automatically part of philosophy, just as the philosophy of anything else is...
The study of the most general and abstract features of the world and categories with which we think: mind, matter...
"Insofar as conceptual analysis is the method of philosophy (as it was widely held to be for much of the twentieth century), philosophy is a second-order subject because it is about language not the world or what language is about.
The important difference between the scientist and the philosopher is in the radically critical nature of philosophy. "Husserl characterizes this difference by saying that the task of philosophy is to ask the ultimate questions...The philosophical questions can not be answered in the same way that empirical questions can be answered.
The sciences are in need of continual epistemological reflection and critique of a sort that only the philosopher can provide. ..."Husserl pictures the work of the philosopher and the scientist as mutually complementary.
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