(* The Body-Brain Weight *);



braindata=

{{0.130334, 0.908485}, {2.66745, 2.62634}, {1.56027, 2.07737}, {1.44185, 

    2.0607}, {0.0170333, 0.740363}, {4.06819, 1.69897}, {3.40603, 

    3.66304}, {2.27207, 2.62221}, {2.71684, 2.81624}, {1., 2.0607}, {0.518514,

     1.40824}, {2.72346, 2.83251}, {2.31597, 2.60853}, {1.79239, 

    3.12057}, {3.82308, 3.75679}, {3.97313, 1.8451}, {0.832509, 

    2.25285}, {1.54407, 1.74819}, {-0.920819, 

    0.}, {-1.63827, -0.39794}, {0.39794, 1.08279}, {1.74429, 2.24304}, {2., 

    2.1959}, {1.71734, 2.64345}, {4.93952, 2.18893}, {-0.552842, 

    0.278754}, {-0.91364, 0.477121}, {2.2833, 2.25527}}