A profile of Jacob Tsimerman, who won the Fields Medal last week and is taking a leave from the University of Toronto to join OpenAI and work on AI safety (Ben Cohen/Wall Street Journal)

<a href="https://www.wsj.com/tech/ai/openai-jacob-tsimerman-fields-medal-ai-safety-391d0f79?st=NaiF5s&amp;reflink=desktopwebshare_permalink"><img align="RIGHT" border="0" hspace="4" src="http://www.techmeme.com/260802/i5.jpg" vspace="4" /></a> <p><a href="https://www.techmeme.com/260802/p5#a260802p5" title="Techmeme permalink"><img height="12" src="http://www.techmeme.com/img/pml.png" style="border: none; padding: 0; margin: 0;" width="11" /></a> Ben Cohen / <a href="https://www.wsj.com/">Wall Street Journal</a>:<br /> <span style="font-size: 1.3em;"><b><a href="https://www.wsj.com/tech/ai/openai-jacob-tsimerman-fields-medal-ai-safety-391d0f79?st=NaiF5s&amp;reflink=desktopwebshare_permalink">A profile of Jacob Tsimerman, who won the Fields Medal last week and is taking a leave from the University of Toronto to join OpenAI and work on AI safety</a></b></span>&nbsp; &mdash;&nbsp; Jacob Tsimerman won the biggest prize in math.&nbsp; Now he's working on the most important problem of his career.</p>