Allowing one yard per person, we arrive at the ancestor we share with chimpanzees in under 300 miles. The ancestor is standing well to the east of Mount Kenya, and holding in her hand an entire chain of her lineal descendants, culminating in you standing on the Somali beach. The daughter that she is holding by her right hand is the one from whom we are descended. The two sisters are facing one another, and each holding their mother by the hand. Now the second daughter, the chimpanzee ancestress, holds her daughter's hand, and a new chain is formed, proceeding back towards the coast.
First cousin faces first cousin, second cousin faces second cousin.
By the time the doubled-back chain has reached the coast again, it consists of modem chimpanzees. You are face to face with your chimpanzee cousin, and you are joined to her by an unbroken chain of mothers holding hands with daughters. Mothers would love daughters, and feel affinity with them, just as they always do. Our chain of African apes, doubling back on itself, is in miniature like the ring of gulls round the northern hemisphere, except that the intermediates happen to be dead. What I get excited about is that the trend of scientific discoveries is to confirm the essential picture of the Bible.