@dik_b: You are stating the current tech in use is 1 TB a few seconds? I thought the Prof said 1 TB in a tenth of a second. Or is he talking the about future possibilities? Either way...mind blown.
If you really think about what or how much the data needs to be converted into light, just to be transported, to travel down the cable. I love to think about tech mechanically and as a concept sometimes. It really puts the world, or better yet, the people who have made it happen into perspective.
I will have to look up more of Professor Merrifields videos if they are all as well presented as this one.