“Her paternal grandmother was a rabid biblio and had a collection of encyclopedias, [Maria] Popova said, and she credits the act of randomly opening volumes and happening upon entries for her passion to discover old knowledge. ‘The Web has such a presentism bias,’ she said, with Facebook updates, tweets and blog entries always appearing with the latest first. By contrast, flipping through the encyclopedia was ‘an interesting model of learning about the world serendipitously and also guidedely.'”