Emails 'pose threat to IQ'

Report in The Guardian a few days back:

The distractions of constant emails, text and phone messages are a greater threat to IQ and concentration than taking cannabis, according to a survey of befuddled volunteers.

Continue here. Cannabis better than emails? Didn't they know already? Old graffito on how to succeed in office politics: smoke dope/the more you suck the higher you get!