ONE MORE TIME, NOW PAY ATTENTION:; E^{-X^2} IN ITSELF IS A VERY UGLY FUNCTION
TO INTEGRATE, BUT WHEN DONE ACROSS
THE ENTIRE REAL LINE, I.E. FROM MINUS
INFINITY TO INFINITY, IT GIVES A BIZARRELY
CLEAN ANSWER. IT IS CERTAINLY NOT OBVIOUS
AT FIRST GLANCE THAT THE AREA UNDER THE CURVE
IS THE SQUARE ROOT OF PI. CATMATICS 101 🐾
