andrewsavikas

One of my favorite things to do with my kids is "Lego challenges" where they come up with objects and I have to try and build them. The combination of constraints (their object, limited lego pieces) always ends with me building something I had no idea I could!

As Tim said, Safari is actually both (2000+ on-demand video courses plus all the books and a bunch of conference videos). And in our usage data, we see most people do both things -- short "ad hoc" learning, especially during the work day, with longer sessions of activity, both in video and books, in the evenings. The trend is especially pronounced with mobile devices, as mobile usage peaks on the weekend and includes a much longer average session length than we see on the desktop.