sludgepuddle

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Whole Brain Emulation: No Progress on C. elgans After 10 Years

While we're sitting around waiting for revolutionary imaging technology or whatever, why not try and make progress on the question of how much and what type of information can we obscure about a neural network and still approximately infer meaningful details of that network from behavior. For practice, start with ANNs and keep it simple. Take a smallish network which does something useful, record the outputs as it's doing its thing, then add just enough random noise to the parameters that output deviates noticeably from the original. Now train the perturbed version to match recorded data. What do we get here, did we recover the weights and biases almost exactly? Assuming yes, how far can this go before we might as well have trained the thing from scratch? Assuming success, does it work equally on different types and sizes of networks, if not what kind of scaling laws does this process obey? Assuming some level of success, move on to a harder problem, a sparse network, this time we throw away everything but connectivity information and try to repeat the above. How about something biologically realistic but we try to simulate the spiking neurons with groups of standard artificial ones.. you get the drift.

Scott Alexander 2021 Predictions: Buy/Sell/Hold

This is outright saying ETH is likely to outperform BTC, so this is Scott’s biggest f*** you to the efficient market hypothesis yet. I’m going to say he’s wrong and sell to 55%, since it’s currently 0.046, and if it was real I’d consider hedging with ETH.

I'm curious what's behind this, is Zvi some sort of bitcoin maximalist? I tend to think that bitcoin having a high value is hard to explain, it made sense when it was the only secure cryptocurrency out there but now it's to a large degree a consequence of social forces rather than economic ones. Ether I can see value in, since it does a bunch of things and there's at least an argument that it's best in class for all those.

Mistake Versus Conflict Theory of Against Billionaire Philanthropy

So many times I've been reading your blog and I'm thinking to myself, "finally something I can post to leftist spaces to get them to trust Scott more", and then I run into one or two sentences that nix that idea. It seems to me like you've mostly given up on reaching the conflict theory left, for reasons that are obvious. I really wish you would keep trying though, they (we?) aren't as awful and dogmatic as they appear to be on the internet, nor is their philosophy as incompatible. For me, it's less a matter of actually adopting the conflict perspective, and more just taking it more seriously and making fun of it less.

The reward engineering problem

What about some form of indirect supervision, where we aim to find transcripts in which H has a decision of a particular hardness? A would ideally be trained starting with things that are very very easy for H, with the hardness ramped up until A maxes out it's abilities. Rather than imitating H, we use a generative technique to create fake transcripts, imitating both H and it's environment. We can incorporate into our loss function the amount of time H spends on a particular decision, the reliability of that decision, and maybe some kind of complexity measure on the transcript to find easier/harder situations which are of genuine importance to H.

The Problem With Trolley Problems

Isn't The Least Convenient Possible World directly relevant here? I'm surprised it hasn't been mentioned yet.

Slava!

Perhaps I'm just being dense, but I don't really get what Carl Sagan's look has to do with praise, or why you should find it disgusting.

Are mass hallucinations a real thing?

One thing I've personally witnessed is people claiming to have had the exact same vivid dream the night before. I'm talking stuff like playing scrabble with Brad Pitt and Former President Carter on the summit of mount McKinley, so it seems unlikely that they were both prompted by the same recent event. Assuming that these people haven't been primed until after the fact, I would expect even stronger effects to be possible for those who have.

Permission for mind uploading via online files

If you believe in Tegmark's multiverse, what's the point of uploading at all? You already inhabit an infinity of universes, all perfectly optimized for your happiness.

Personally I'm very inclined toward Tegmark's position and I have no idea how to answer the above question.

Can you enter the Matrix? The deliberate simulation of sensory input.

I am extremely poor at visualization, can't even picture a line or a circle (I just tried it) and I don't remember images from my dreams. Strangely, when I was a child, I was sometimes able to visualize, but only with extreme effort. More recently, I have experienced what I would call "brain movies", involuntary realistic visualizations, under the influence of opiates.

It seems I am fundamentally capable of visual thinking, but my brain is just not in the habit, though I wouldn't mind being able to summon the ability. It sounds kinda cool.

Automated theorem proving

There are definitely cases where there is little hope of proving "100% intended performance". For example, RSA only works as intended if factoring is hard. Most computer scientists strongly believe this is true, but this is not likely to be proven any time soon.

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