The sea quirt provides a cautionary tale – when it is born, it floats through the open oceans seeking a place to make its home. Once the sea quirt finds a solid piece of ocean floor to attach itself to, it does a peculiar thing. The sea squirt eats its brain. Having achieved its objective, a firm anchor within the ocean; it no longer needs its brain. You may know people like this. They have a firm anchor in life or at work and, apparently, have long since consumed their brains. Zoologists say that the sea squirt shares 80% of our DNA. Some people probably share more than that. The sea squirt is assuming that nothing is going to change in its environment and that it will no longer need to make significant adjustments. This may work for the sea squirt, but human beings can’t afford to follow suit.