<ul>
<li>did a phd in physics.</li>
<li>had a job offer with annual salary of $240k (yep, my jaw dropped).</li>
<li>participate coding competitions from time to time, like <a href="https://www.hackerrank.com/yihui_ren" rel="nofollow noreferrer">here</a>.</li>
<li>now i am playing with deep learning.</li>
</ul>

Ray