Nature or Nurture?

With classes done for the day, I'm walking out towards my car and went to grab my keys.  I'll share my thoughts with you, "Hm.  Not in my pocket.  Isn't that where I normally put them?  Better check the other pocket.  Hm.  Not there either.  Drat!  Now I'm going to have to dig through my bag to find them.  That can wait till I get out to the car."  While my mind drifts to other thoughts, I look down and realize my keys are in my hand with my water bottle.

Have I observed enough times my mother looking for her glasses while they're on top of her head that I learned this skill?

Or is it just passed down in my DNA to get things done without realizing it?  (Isn't that a nice way to phrase it?)

Expectations

At our house, we don't buy a lot of ice cream.  When we do, it usually doesn't last very long.  

For New Years, our very good friends drove close to 2,000 miles to come visit us (which was wonderful!!!) and we bought ice cream.

Today after school, my son looks into the freezer and declares,

"Hey!  What happened to the ice cream?  

There use to be 2 things of ice cream here 

and now there's just a bag of corn!"