&gt;Reliable computing technology is as revealing of an objectively existing physical reality as I need.<p>What do you mean by this?<p>All you need is Boolean algebra to derive every reliable aspect of our computing technology.<p>01~&amp;<p>Yes, you need a machine that can &quot;execute it&quot;, but every reliable thing that a current computing machine will do is predicted by consecutive and parallel applications of the truth table:<p><pre><code>    a|b|a~&amp;b
    -|-|----
    0|0| 1
    0|1| 1
    1|0| 1
    1|1| 0
</code></pre>
Do you mean that Boolean algebra is the objectively existing physical reality; is a part of the objectively existing physical reality; or, is only evidence of an objectively existing physical reality? If it is only evidence, in what way is it evidence?