Spot the difference

We had this interview on The Way She Writes about "linguistically challenged" writers like us, where we were saying typical &t-things like...

I am (and have always been) fairly absent-minded. Absentmindedness is a strength, I think, not a weakness, in general it’s a good thing to be somewhere else with your mind.

...and there was this author picture...

...and people responded with nervous emails along the lines of...what's your secret, what's your secret...?

Here it is (the secret):

Spot the difference.

PS: Cathy Ulrich from Hollywood Hates Me writes: "What difference? I can see no difference."