Well, suppose something told me what I would decide if I gave any matter 15 seconds of consideration.  It would be an invaluable tool I might use often, for example for sorting and classifying, throwing out trash and so forth.  For example, it would be a fantastic spam classifier, since even after 15 seconds there is no doubt.  I could use it to get through hundreds of spam messages easily, or delegate things to appropriate departments and so forth.<p>But it would not give me &quot;x-ray vision&quot;, since at the end the day it is the same thing I myself conclude if I give the matter 15 seconds of consideration.  Something that I miss - a genuine mail written the way a spam might be (&quot;hey! it was nice to meet you!&quot; in the subject, etc), by a recent acquaintance I forgot I made - would be misclassified as spam.  There is no x-ray vision involved here - it&#x27;s not training on the data - it&#x27;s training on <i>me</i>!<p>I feel the distinction is an important one.