Fluid Mosaic

As an undergrad bio major at UC Davis, I learned that cell membranes are composed primarily of a phospholipid bilayer—a double layer of fatty acids. The double layer gives each cell the stability of a solid and the fluidity of liquid. Embedded within the cell membrane are gateway structures that allow nutrients in and send waste products out. Blood sugar, compromised in diabetics, is controlled by an insulin-regulated gateway. Because these gateways float around in the bilayer, the overall structure is called a fluid mosaic. I really like the dualistic quality of the fluid mosaic model. The duality of stability and fluidity is, in a way, intelligent at the level of microscopic cells. It's also intelligent at the level of daily life. I tend to be overly structured in my routines and commitments. This has certain advantages: Cycling through my structural commitments—writing, exercise, and various other pursuits—adds up to progress over time. The downside is that it can lead to rigidity. Once in a while, my best friend gently reminds me that I could be a little more flexible. She's right, flexibility and fluidity are essential. Apparently, Stephanie and the common cell have formed an alliance; together, they teach me how to be more balanced—and more intelligent.