"Pay attention to the footnotes - those inconspicuous markers that linger at the edges of the text and in the crevices between words - for they are the unstoppable protagonists of meandering digression and of drifting thought...Footnotes signal dead-ends and dark alleys in a text's construction; the well-trodden districts and more marginal paths..."
Another analogy might be to compare footnotes to the network of hyperlinks on the world wide web, taking us further and further away from our starting point, offering tantalising digressions and deviations on the way, and then sometimes leading us back to our original position. When surfing the net, we use an associative rather than a linear kind of thinking which leads us to make connections between seemingly random elements.
And finally, another Lego masterpiece, by Italian Marco Pece, of an Old Master work of art, Leonardo's Last Supper....
Oh dear, we seem to have come back to religion again - there's absolutely no getting away from it !