Have you ever noticed a bluish tint to your child's skin, especially around the fingernails and lips?

CNN: Ventricular septal defect (VSD)

Have you ever noticed how many of the most prominent conservative voices in America sound more like liberals?

FORBES: Move up http://i.forbesimg.com t Move down

Have you ever noticed that when two people sit at a table, they often choose chairs on opposite sides?

FORBES: Want Collaboration? Watch Where You Sit.

Have you ever noticed that your co-workers tend to fall into two categories?

FORBES: How To Deal With Jerks And Idiots

Have you ever noticed how likely we are to share our financial success stories, yet how hesitant we become when sharing our financial failures?

FORBES: Don't Sell Yourself Short (Or Long)

Presentation extends to business as well: Have you ever walked through a museum, art gallery, or other exhibition or event and noticed the attention to the displays, stands, lighting and pedestals that highlight the product or offering?

FORBES: Appearances Count: In Business, Presentation Is Everything