| | Neil, while I disagree with several key points (see below), I sanctioned this post of yours because it shows off your talents in uncovering potential error in thought. You have a great ability Neil, and I thoroughly enjoy your work - even while I'm in a stark, theoretical disagreement with it. -------------
Neil: In rejecting a priori knowledge, Rand maintained consistently that the principles of logic must be discovered. As Peikoff put it: “Man is born tabula rasa; all his knowledge is based on and derived from the evidence of his senses. . . . Man needs to discover a method to guide this process, if it is to yield to conclusions which correspond to the facts of reality . . . .” [ITO, p. 112.] The obvious question is: How can a blank slate “discover” a method for thinking? The ability to discover a method presupposes the existence of basic structures of thought, such as the ability to observe contradictions, make generalizations and the like.[1] It isn’t clear that Rand provides a direct answer, but perhaps we can get some insight into this from Rand’s discussion of logic and grammar.
Ed: Neil, Rand's purpose would've been better and more clearly served had she wrote: "Man needs to discover [THE] method to guide ..." rather than writing that "Man needs to discover [a] method to guide ..." This is because there is only one human method (one right method for man) of knowledge acquisition - the marriage of experience with logic.
Taking this to be the case for illustration, if all knowledge were wiped out today (and man survived the loss), the resulting definition for man - stemming from millennia of advancement for those humans who had to unfortunately start out at the bottom again, would be "rational animal." We'd get to the same definition that we had got to before, because our nature hadn't changed - and neither did our "method" or our one right (human) way to think straight. -------------
Neil: Although Rand has argued that logic must be discovered from sensory experience, she takes something of a rationalistic tack when discussing how the mind recognizes whether a concept is axiomatic.
[T]here is a way to ascertain whether a given concept is axiomatic or not: one ascertains it by observing the fact that an axiomatic concept cannot be escaped, that it is implicit in all knowledge, that it has to be accepted and used even in the process of any attempt to deny it. [ITO, p. 59.]
This is a curious argument for someone who is an empiricist in outlook to make. Rationalists often assert that empiricists ultimately rely upon a priori insight to justify any knowledge at all, and this is what Rand appears to be doing here. [Ryan, Objectivism and the Corruption of Rationality, pp. 213-14.] In fact, Peikoff argues that the axioms (although validated by sense perception) are “self-evident.” [Peikoff, Objectivism: The Philosophy of Ayn Rand, pp. 8-9.]
Ed: Neil, discovery and validation EXPAND the "a priori" zone of a thinking agent. The classic example of an expanding a priori zone (via discovery and validation) is the Morning Star = Evening Star = Venus. Here is a self-quote from another thread:
------------- ... expanding a priori zones. I became aware of this aspect of reality after reading about the Morning Star = Evening Star = Planet Venus paradox over at Carolyn Ray's website. Here's a summary of how it went:
1. early humans thought there were 2 stars (Morning & Evening)
2. later humans discovered that it had been one star all along (the planet Venus)
3. after the a posteriori "discovering" of the facts of reality, these later humans were operating with more in their a priori zone
4. hence, they did not continually rely on a posteriori evidence input - they had found the identity of what was both the Morning Star & the Evening Star -------------
So Neil, we do the same with axioms. We can know - really know - that which we didn't know before, via "mere" discovery and validation. Once a thinking agent discovers (via experience and logic) the fact that this human process (discovery+validation = real knowledge) entirely explains human knowledge acquisition, it becomes that simple for that thinking agent to understand. Agents who haven't expanded their understanding in this manner, however, will still "see" a paradox before their eyes.
It is "enough" to "merely" discover and validate axioms, Neil. -------------
Neil: On the other hand, unlike Rand, Russell saw no need to jettison a priori reasoning in order to develop minimalist metaphysics. He argued the truths that may be known a priori are relatively few and general.
Ed: Neil, as can be ascertained from above, "a priori reasoning" does not need to be "jettison[ed]." It merely needs to be kept commensurate with the background experience (and logical reflection) of the thinking agent in question. We - as infants - do not start with the a priori, we start with our experience. And we slowly - very slowly - expand our a priori zones as we discover the aspects of reality (the identities in reality).
In short, you're argument only holds after first adopting and maintaining a limited (and therefore insufficient) perspective of Rand - such as that of Ryan's limited perspective. -------------
FOOTNOTES
Neil: There are statements within the “Official Objectivist” literature that indicate that the mind is not quite so “tabula rasa” as these statements imply. For example, Leonard Peikoff goes so far as to say that “[t]he process of measurement-omission is performed for us by the nature of our mental faculty, whether anyone identifies it or not.”
Ed: Neil, you're conflating method with content. The blank slate or “tabula rasa” pertains to content, not method. In this light, mental content - before ANY experience - is 100% potentiality and 0% actuality. And as I alluded to above, the "method" is not "blank" but "human" (it is not 100% potentiality, but actualized - via the necessary limitations that identity imposes on how humans will be able to think and learn). -------------
Ed
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