I think the learning technologies timeline is very interesting, particularly when you look at the very beginning in contrast to the end. In the beginning, the entries have huge chronological gaps in between them (often hundreds of years), while towards the end, almost every year has at least one entry if not more. It's interesting to speculate on reasons for this. One of the best reasons I can think of is that in, say, 40000 BCE, life was a lot more difficult. Daily activities centered around the bare essentials of staying alive: catching/gathering food, staying warm, etc. With no supermarkets, microwaves, or Polar Fleece, these tasks were pretty all-consuming. There wasn't much time to spend sitting around dreaming up cool toys. However, as technology did (painstakingly) progress and day-to-day life and personal preservation began to get a little easier, people had more time to become educated and, put simply, start wondering about stuff. Heightened levels of education (made possible by technology itself) led, I believe, to heightened levels of intellectual sophistication, and this in turn led to the creation of new technologies. It's a chain reaction, and as we can see by the increased crowding of the timeline in the twentieth century, these reactions seem to be occuring very quickly.
I think the timeline does a good job of touching upon important technologies, although after reading some of the things already posted by this class I can see that certain events were indeed left out (the Oxford English Dictionary is a good one, although I suppose some would argue that this is only an important event for English-speaking people). I like how the entries focus not solely on technology that has to do with writing and the distribution of writing and other information. I think it's important to include medical achievements like cochlear implants and bionic eyes, because these things are also extremely important technologies when it comes to learning. Think about the ways that being deaf or blind can put people at a disadvantage when it comes to learning, especially little kids who have never known what it's like to see or hear correctly. I think it's extremely important to take note of technologies that seek to help EVERYbody learn, not just people who are fortunate enough to be without any kind of physical or mental challenges, and I applaud the timeline for doing so.