Paper: <a href="https://arxiv.org/abs/1912.11211" rel="nofollow">https://arxiv.org/abs/1912.11211</a>.
Tweets: <a href="https://twitter.com/mark_ledwich/status/1210743158184693760" rel="nofollow">https://twitter.com/mark_ledwich/status/1210743158184693760</a>.