I doubt that it&#x27;s used in M.<p>&quot;Why not just build M with neural nets from the beginning? Without the right data, neural nets couldn’t provide a service much more powerful than, well, Siri, and Wit.ai’s tech can get things started with relatively little data. “This is a good way to bootstrap. With a few thousand data-points, you can start to build a model,” Lebrun says. “Then, using this model, you get more data, and once you have about a million data points, you go to Yann and get some deep learning.”&quot; [1]<p>[1] <a href="http:&#x2F;&#x2F;www.wired.com&#x2F;2015&#x2F;08&#x2F;how-facebook-m-works&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.wired.com&#x2F;2015&#x2F;08&#x2F;how-facebook-m-works&#x2F;</a>