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What's involved in building a site like this? I am subscribed to an industry forum in the beverage space where people buy and sell equipment using forum posts - t's really inefficient and I often think they could use a simple marketplace site.

I'm an actuary - from your site bio it appears you may be as well. As you know, P/C insurance carriers have been using machine learning for quite some time. What is it that you are doing differently?

Look into writing apps for Shopify, many are quite simple and charge a fee.

The models as described in the article do seem to have glaring flaws. However, the article did not show that anyone has been killed based on the models alone.

With respect to adversarial examples for random forests, that link states:

   Myth: Deep learning is more vulnerable to adversarial examples than other kind of machine learning.

   Fact: So far we have been able to generate adversarial examples for every model we have tested, including simple traditional machine learning models like nearest neighbor. Deep learning with adversarial training is the most resistant technique we have studied so far.

But the larger point is that adversarial examples are just one demonstration that algorithms are still quite primitive. Nobody should be killed on the basis of a statistical algorithm alone (and to be fair, the article does not show that anyone has been).

I don't disagree with the math, but wouldn't it be the case that it's easier to get a biased sample from 1000/100M people than 1000/1M people?

For instance, maybe your sampling ignored a particular region of the country or socioeconomic strata etc.

Best of luck to you, I am not in the industry and cannot recommend from that perspective.

As a consumer though, augmented reality ( eg Hololens and Magic Leap) seems like it is about to become very big, and probably utilizes machine vision.

Can you recommend some resources for learning about web scraping?

HPMOR was fantastic - very well done re-imagining of Harry Potter with Harry as a rationalist, challenging long-held beliefs about magic. Plot, pacing, etc. were great. Really influenced how I think about my own beliefs as well.

Yes.

I worked with a large company preparing for Solvency II. My impression was that it would generally increase regulatory capital requirements, not decrease.

Actuary here, though I don't work with these types of policies.

Your description of how insurance makes money is the standard understanding. However, I would think that most products do have some underwriting gain built in as well.

It can get pretty complex as you need to set up a liability (reserve) to match the assets (premium) that come in. Interest causes both the asset and liability to increase. As benefits are paid out, both the asset and liability decrease. If the liability decreases more than the asset, you make money. Or if you have a substantial surplus (asset - liability), the interest on that is pure profit as well.