Continuous Partial Attention

Multitasking is out. The new thing is Continuous Partial Attention (CPA):

From radar.oreilly.com:

With continuous partial attention we keep the top level item in focus and scan the periphery in case something more important emerges. Continuous partial attention is motivated by a desire not to miss opportunities. We want to ensure our place as a live node on the network, we feel alive when we’re connected. To be busy and to be connected is to be alive.

Linda Stone is the one credited with coming up with the idea.

Quirks and Quarks1, a CBC podcast that I listen to, just had an episode that dealt with Multi-tasking.

There is some interesting research being done to discover why there’s a bottleneck in in the brain and why the brain can then only work on one thing at a time.

A good analogy are computer processors. Until recently, most computers were single core (one processor). This meant that they could only perform one operation at a time.

However, most modern operating systems are multithreaded. This means that the computer can do (or at least appears to be able to do) multiple operations at once. It accomplishes this by creating threads of processes (task) that each take a turn using the single processor. In short: multitasking.

Nowadays, many computers have multiple processors on a single chip. This allows for for true multitasking, assuming your program of choice is designed to use multiple processors. The most common applications that take advantage of multiple processors are video and photo editing software. Why? Graphics often need to be generated and this just happens to be a perfect task that can be split up and parted out to multiple processors.

1 See also: This American Life; Radio Lab


Blood Draw

I had some blood drawn on Friday for a TSH/CBC check. It’s been over two years since I last had blood drawn/donated and that was only slightly better then the first time I donated blood.

I wasn’t quite sure how I do this time. I was only loosing a few milliliters of blood compared to the 450 mL or so given up during a donation, so I was hoping for no complications.

The nurse was great and was able to tap my wonderful veins on the first try. She collected the two vials (one small, one large) with a minimum of issues. However, as soon as I sat up, I started to feel it again. So and laid back down while she filled out all the forms. The lightheadedness subsided but I began to feel warm and started sweating. Then I started to feel cool (which I suspect was due to evaporative cooling). I finally felt recovered and was on my way.

Talking with some of my classmates about the experience, Smiley thinks that I might need to drink more water. I’ll try that next time.