Popping up in some of the RSS feeds I read has been the news that e-mail harms our IQ more than partaking of a spliff.

Guardian Unlimited

The Register

The posited mechanism – constant distraction – seems OK, but surely phone calls and in-person interruptions are far worse distractions? I know I have far more control over e-mail than phones or people. The more duplex the interaction, the worse impact it has on my productivity, that’s for sure.

So, maybe the the next headline will be Phone Calls harm IQ more than a Smack Habit.

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