Evolution

Thinking About Learning

“Learning” is another one of those abstract concepts which reveals significant complexity upon further examination. In the context of people, learning represents our ability to incorporate experience in a beneficial way; we can learn facts, skills, or social norms (among countless other things) through repeated (or one-time) exposure. The exact mechanics underlying the learning process …

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Examining Evolution as an Upper Bound for AGI Timelines

With the massive degree of progress in AI over the last decade or so, it’s natural to wonder about its future – particularly the timeline to achieving human (and superhuman) levels of general intelligence. Ajeya Cotra, a senior researcher at Open Philanthropy, recently (in 2020) put together a comprehensive report seeking to answer this question …

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A Circuit-Level View of Evolutionary Interpretability

I’m often torn between the competing ideas that: Understanding the brain, with its repeating structures and distinct modules, will be relatively easy (i.e. within the short-term grasp of humanity) Understanding the brain, with its structures crafted through millions of years of random evolution, will be relatively hard (i.e. will not happen for multiple generations) For …

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Thinking Bottom-Up

Humans (and all other brain-having organisms) interact with the world in a hierarchical manner, starting from the top and working down. When we decide to engage in an action, we make the decision at the highest level (for example, deciding to write a blog post), and then break up that action into its lower level …

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Thinking About Thinking Machines

A number of other posts so far have touched on what it is that brains do – and for the most part, it’s been summarized as “creating a model of the world”. By this, we’ve meant that certain patterns of neural activity can be understood as representing or standing for some observed pattern of material …

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Defining Intelligence

Dedicated to Sam Rendall – you and your ideas are greatly missed.  What is intelligence? What does it mean to be intelligent? A starting point for a very high level definition might be an ability of an agent to accomplish its goals in its environment. From this definition, we can see three pieces to assessing …

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