diff --git a/README.md b/README.md
index 553e685..a01bae1 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,7 @@
 # gravity
-Modeling the trajectory of ball under the force of gravity
+## Modeling the trajectory of ball under the force of gravity
+
+A Study of the Utmost Gravity
+
+A set of functions to calculate the effects of gravity.
+
diff --git a/gravity_of_errors.py b/gravity_of_errors.py
index 9d23fc4..6958f4f 100644
--- a/gravity_of_errors.py
+++ b/gravity_of_errors.py
@@ -23,26 +23,4 @@ def xy(t, xy0, v0):
     (vx0,vy0)= v0
     return x0 + vx0 * t, y0 + vy0 * t + 1./2 * g * t**2
 
-try:
-    xy0 += (0,0)
-except (NameError, TypeError):
-    x0 = float(input("Initial position x0 = "))
-    y0 = float(input("Initial position y0 = "))
-    xy0 = (x0, y0)
-
-try:
-    v0
-except (NameError, TypeError):
-    vx0 = float(input("Initial speed vx0 = "))
-    vy0 = float(input("Initial speed vy0 = "))
-    v0 = (vx0, vy0)
-finally:
-    try:
-        trajectory = [(t/2.,) + xy(t/2., xy0, v0) for t in range(8)]
-    except:
-        print("data has problems: " + str(xy0))
-
-
-
-print(trajectory)