But the weights trained from machine learning are a black box, in the sense that no human designed e.g. the image processing kernels that those weights represen

But the weights trained from machine learning are a black box, in the sense that no human designed e.g. the image processing kernels that those weights represent. That is one reason people are skeptical of them, not only is training a large model at home expensive, not only is the data too big to trivially store, but the weights are not trivial to debug either