Suckers for irrelevancy

I’ve recognized this in myself and others:

A study from Stanford reports that heavy multi-taskers are worse at choosing which task to focus on. “They are suckers for irrelevancy”, as Cliff Nass, one of the researchers put it. Multi-taskers often think they are like gym rats, bulking up their ability to juggle tasks, when in fact they are like alcoholics, degrading their abilities through over-consumption.

Now, what was I just doing again?