No Jacket Required

Who knew?

Don't panic.  This is not a post about Phil Collins.  Just excited that I could wander around outside in
shirtsleeves.  An odd term, as you also need the front and back of the shirt, not just the sleeves - unless you wish to make a spectacle of yourself.

Today I have experienced that weird phenomenon where you decide that you are no longer interested in
something, and then that thing, whatever it is, starts dancing around in front of you (probably wearing nothing but shirtsleeves) turning somersaults and gurning for attention.

No.  Still no clearer.  Can you explain again, please?

I'm sure Brian Cox could explain it via quantum mechanics, but I wouldn't understand it any better if he did.
 
It is a test.  Do you give into the tiny dancing gurner, to the constant hem-tugging and gibbering?  Or can you tune it out, just enough to hear that small steady voice from deep within?

My dancing gurner comes with a full laser show, goodie bags and interval ice-cream.  No jacket though.  Not required today.