<p><pre><code>    Couldn&#x27;t we build an inventory of every damn molecule occuring naturally in
    human bodies, tagged by the subsystems they are associated with (blood 
    circulation, cell cores, digestion etc.) and then run simulations that tell 
    you for a new chemical what they can bond with and what exposure is safe?
</code></pre>
In a word? No. Not at all. Modeling the behavior of individual proteins is a NP-hard problem [0]. Modeling the behavior of multiple proteins interacting is even worse. And modeling the behavior of thousands of proteins, under the influence of thousands of unregulated chemicals is a combinatorial explosion of NP hard problems.<p>[0] <a href="http:&#x2F;&#x2F;www.piercelab.caltech.edu&#x2F;assets&#x2F;papers&#x2F;proeng02.pdf" rel="nofollow">http:&#x2F;&#x2F;www.piercelab.caltech.edu&#x2F;assets&#x2F;papers&#x2F;proeng02.pdf</a>