I think I've discovered what is plaguing me. ADT.

"It's sort of like the normal version of attention deficit disorder. But it's a condition induced by modern life, in which you've become so busy attending to so many inputs and outputs that you become increasingly distracted, irritable, impulsive, restless and, over the long term, underachieving. In other words, it costs you efficiency because you're doing so much or trying to do so much, it's as if you're juggling one more ball than you possibly can."

I've been wondering why I forget everything and seem so out of sorts and irritable lately. I certainly wasn't like this when I was travelling last year. And why? Because I didn't have to deal with "the constant and relentless chatter coming from our computers, phones and other high-tech devices".

Are my mental powers being diluted by my modern workplace?