Thanks Yujia for finding the link in her last post. Today, when I was reminded of task analysis(TA) by sequence analysis(SA), I knew there are some similarities, but also some difference, but I could not articulate at that time. This paragraph from Jeff’s post helps me think,

“But whereas task analysis if often used as a means to measure efficiency to ascertain usability, sequence analysis in film is used to gain insight into the objective basis of a subjective phenomenon: the experience of a film.”

Here is a definition of task analysis from Dan Saffer’s book, Designing for Interaction,

“A task analysis is a raw list of activities that the final design will have to support.”

“[it] is especially useful later in the design process as a check to see whether the design supports all the tasks required. … the designer can make sure the design meets all the requirements.”

From Jeff’s analysis about the SA, I got the sense that it is to make the invisible visible, and the unconscious conscious by seeing the break down of a sequence from the film, and find out and analyze what exactly shape the experience. While TA is about logic, exploring all possibilities of an interaction. The purposes are different.

However if going further, by laying the two out, I can see the possible connection here. If TA could also be used to analyze the sequence of interaction, instead of just examining whether something is missing, but also exposing the elements that consist of the design, we could also make the invisible visible, in terms of finding out how they affect the user experience. Any thoughts?

Ha, it seems that I should explore Jeff’s old posts as supplementary class readings.