Training bias in AI "hate speech detector" means that tweets by Black people are far more likely to be censored

More bad news for Google's beleaguered spinoff Jigsaw, whose flagship project is "Perspective," a machine-learning system designed to catch and interdict harassment, hate-speech and other undesirable online speech. Read the rest

Is this a dog wearing a gas mask or an albino baby elephant?

Posted by redditor Cutcakenotwrists to r/confusing_perspective. Read the rest

What it's like for a mathematician

It's hard to explain the experience of expertise. That's why one of the first things they teach you in journalism school is to avoid questions like, "What's it like to be a mathematician?" It's hard for your interview subject to know how to respond and you seldom get a useful answer.

But not never.

On Quora, someone* asks, "What is it like to have an understanding of very advanced mathematics?" And the responses are surprisingly interesting. Especially the first, wherein an anonymous mathematician lays out a detailed account of how advanced mathematics have altered his/her view of the world and of being a mathematician.

• You are often confident that something is true long before you have an airtight proof for it (this happens especially often in geometry). The main reason is that you have a large catalogue of connections between concepts, and you can quickly intuit that if X were to be false, that would create tensions with other things you know to be true, so you are inclined to believe X is probably true to maintain the harmony of the conceptual space. It's not so much that you can imagine the situation perfectly, but you can quickly imagine many other things that are logically connected to it.

• You are comfortable with feeling like you have no deep understanding of the problem you are studying. Indeed, when you do have a deep understanding, you have solved the problem and it is time to do something else. This makes the total time you spend in life reveling in your mastery of something quite brief.

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