Re: [IxDA] Re: [IxDA] What makes an application feel fast?

9 Nov 2010 - 9:25am
737 reads
Dan Saffer

On Nov 9, 2010, at 3:35 AM, Simon Raess wrote:

> "For years, software engineers have been told that applications must respond to user events within 100 milliseconds to seem instantaneous, yet this assumption has never been systematically tested. In this research, we attempt to establish thresholds of detection for changes in a graphical user interface using adaptive tracking. For keyboard interactions, subjects did not notice delays of approximately 150 milliseconds. In contrast, for mouse interactions, subjects did not notice delays of up to 195 milliseconds. Given these findings, further research is clearly needed to firmly establish lower bounds on application responsiveness so that software and operating system engineers can more precisely tune the interactive real-time responsiveness of their systems." > > Source: [1]

Interesting. But as Emerson noted, when you strike at a king, you must kill him.

If you're going to challenge 40 years of orthodoxy, I hope you have an air-tight case, meaning good methodology and a large and diverse subject group. Since your paper is behind the ACM paywall, it's impossible to know those things. Saying "further research is needed" leads me to believe this isn't so.

Just FTR, putting any paper behind the ACM paywall without any other option makes it basically inaccessible to (non-academic) professionals.


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