Editing Explanatory gap (section)

== History ==
{{Main|Leibniz's gap}}
Leibniz's passage describing the explanatory gap is as follows:
<blockquote>It must be confessed, moreover, that perception, and that which depends on it, are inexplicable by mechanical causes, that is, by figures and motions, And, supposing that there were a mechanism so constructed as to think, feel and have perception, we might enter it as into a mill. And this granted, we should only find on visiting it, pieces which push one against another, but never anything by which to explain a perception. This must be sought, therefore, in the simple substance, and not in the composite or in the machine.</blockquote>