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Showing posts from March, 2015

Speciation pressures come in two interacting forms, spatial and cultural separation.

From this article: "But being on the way to becoming a new species isn’t the same thing as actually speciating. Actual speciation without isolation is quite rare, and even the Santa Cruz Island jays have not actually speciated, and may never even do so. But the implications for long-held evolutionary principles are intriguing. Darwin’s famous Galapagos finches certainly prove that isolation leads to speciation, but now it may be that isolation isn’t always necessary to get species to diverge." Two things, 1) The theory of evolution never states what the parameters of "separation" are, it simply demonstrated that strict spatial separations do lead isolated populations to local adaptations and eventually speciation over time. This is a separate thing however from saying that to have speciation one must have *strict spatial separation*. This is key because.... 2)There is one other way where by populations can become separated. What is it? Culturally. This would inclu…

Google apes Wikipedia, to introduce veracity ranking to search

In a blog post from 2008, I introduced the idea of incremental truth following that is the secret sauce behind why wikipedia works as a source of reliable information for many subjects despite having a generally unrestricted editing model for new articles by any possible authors.

Over the years people have variably misunderstood the power of this mechanism and as time has gone by the relative approach to truth that has been clear to see with various types of politically or religiously focused topics is clear. For such articles wikipedia had found that "comment wars "would break out as clever but subjectively based arguments were used to change articles in subtle or gross ways producing articles that appeared to muddle down the historical or empirical facts to long paragraphs of highly conditional statements with little definite statements of veracity.

Moreover these highly active articles were continuously subject to comment bombing of various types as vandals holding opposi…

Salience driven novelty seeking, a hypothesis for why time seems to speed as you age.

In 2009 I mused in a Facebook post where a friend quipped if they were the only one who felt time was moving faster as they aged I responded.:

"the more you know, the less there is to find out, the less there is to find out the slower you learn new things, imagine a unit of learning as perceived by you being constant as time goes by life surprises you less and what does happen is spaced out in your experience over longer periods of time, thus a given number of events (significant learning ones that bring new knowledge) is perceived to be spaced out as well and there you go, time contracting with age. 

Just a theory. ;)"

I later wrote a short blog article describing the theory but didn't further explore until now.

Since then, I've gone on to perform personal research in dynamic cognition and have proposed a formal theory of generalized dynamic cognition based on an idea I was realizing at the time I called "salience modulation" , my refined answer to the questio…