Good question. We actually can explain how the machine answers our questions. For example, we know how the ML works for the case of image recognition. See the following paper by Chris Olah:
By feature visualization, we know that the machine sees at each ...
I have one concept, which allows to structure knowledge gathered by a ML system in both categorical and algorithms-like structure.
The key idea here is that we contain in our minds some network-like structure in our minds, which helping us not only to classify some data, but also to form an abstract meaning about text or message.
Other than that, in ...