The timeline:<p><pre><code>    1934: This is predicted
    1997: This is done http:&#x2F;&#x2F;www.nytimes.com&#x2F;1997&#x2F;09&#x2F;16&#x2F;science&#x2F;scientists-use-light-to-create-particles.html
    2014: We will &quot;demonstrate the feat within the next 12 months&quot;
    2015: Didn&#x27;t bother</code></pre>