When are we not ourselves?

[Thumpalumpacus]

Source?

There is a lot of Google reading you can do but here is one article.
http://www.npr.org/templates/story/story...d=11893583
The body replaces 98% of the atoms each year.

Using radiation detectors, the researchers watched the atoms move all over the body. They found that the new atoms replaced old ones and ended up in all tissues of the human body.

So the furniture is rearranged. Does that mean you've moved to another home?