Dented fingernails

As I sat at my desk, staring at corner where the unplugged LCD monitor that I saved from the trash bin resides (one that, coincidentally, isn't connected to any other electronic device at this time either), I began to wonder what the other scientists on the floor thought about in their down time. Do they ponder their chosen object of scrutiny, their tiny molecule that defines their focus of academic worth? Do they reflect upon their degrees, their theses, the extra letters that they've placed at the end of their names? Or perhaps they just stare out of the window, wallowing in their self-acknowledged greatness as they occupy the corner of their laboratory at one of the world's most excellent universities - one so "excellent" that they even have an Institute for Excellence?

Today, while my biochemical interactions stewed away, my great downtime observation was this:
I have dented fingernails.

Not all of them, mind you - just the ones on my thumbs. Two little indentations roughly 1/3 of the distance from the proximal edge, bilaterally. One of the beauties of the human body is that we're kind of bilateral, at least on the outside, so that you can generally find that if something appears odd on both sides equally, it may just be normal. Or bilaterally odd.